Casio Watch MA1011 EB User Manual

MA1011-EB  
Operation Guide 5173  
Getting Acquainted  
Battery discharges in the dark.  
Congratulations upon your selection of this CASIO watch. To get the most out of your  
purchase, be sure to read this manual carefully.  
LEVEL 1  
LEVEL 2  
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any  
damage or loss suffered by you or any third party arising through the use of this  
product or its malfunction.  
Some or all  
functions  
disabled  
LEVEL 3  
LEVEL 4  
Discharge  
The actual level at which some functions are disabled depends on the watch model.  
Frequent display illumination can run down the battery quickly and require  
charging. The following guidelines give an idea of the charging time required to  
recover from a single illumination operation.  
Approximately 5 minutes exposure to bright sunlight coming in through a window  
Approximately about 8 hours exposure to indoor fluorescent lighting  
Be sure to read “Power Supply” for important information you need to know  
when exposing the watch to bright light.  
Keep the watch exposed to bright light  
The electricity generated by the solar cell of the watch is  
Bright Light  
stored by a built-in battery. Leaving or using the watch  
where it is not exposed to light causes the battery to run  
down. Make sure the watch is exposed to light as much  
as possible.  
When you are not wearing the watch on your wrist,  
position the face so it is pointed at a source of bright  
light.  
Solar cell  
If the display of the watch is blank...  
If the display of the watch is blank, it means that the watch’s Power Saving function  
has turned off the display to conserve power.  
You should try to keep the watch outside of your sleeve  
as much as possible. Charging is reduced significantly  
if the face is even only partially covered.  
The watch continues to operate, even when it is not  
exposed to light. Leaving the watch in the dark can  
cause the battery to run down, which will result in some  
watch functions to be disabled. If the battery goes  
dead, you will have to re-configure watch settings after  
recharging. To ensure normal watch operation, be sure  
to keep it exposed to light as much as possible.  
See “Power Saving Function” for more information.  
About This Manual  
Depending on the model of your watch, display text  
appears either as dark figures on a light background or  
light figures on a dark background. All sample displays  
in this manual are shown using dark figures on a light  
background.  
Battery charges in the light.  
Bright Light  
Button operations are indicated using the letters shown  
in the illustration.  
Solar cell  
(Converts light to  
electrical power.)  
Electrical  
energy  
Each section of this manual provides you with the  
information you need to perform operations in each  
mode. Further details and technical information can be  
found in the “Reference” section.  
LEVEL 1  
LEVEL 2  
LEVEL 3  
LEVEL 4  
All functions  
enabled  
Charge  
Rechargeable battery  
General Guide  
Press C to change from mode to mode.  
In any mode (except a setting mode), press B to illuminate the display for about  
one second.  
Timekeeping Mode  
World Time Mode  
Stopwatch Mode  
Countdown Timer Mode  
Alarm Mode  
Press C.  
Radio Controlled Atomic Timekeeping  
To specify your Home City  
1. In the Timekeeping Mode, hold down A for about  
five seconds until the left dial hand points to T1 and  
the city code flashes on the upper display. This is the  
setting mode.  
This watch receives a time calibration signal and updates its time setting accordingly.  
This watch is designed to pick up the time calibration signals transmitted in  
Germany (Mainflingen), England (Anthorn), the United States (Fort Collins), China  
(Shangqiu), and Japan (Fukushima, Fukuoka/Saga).  
City code  
Left dial hand  
See the information under “Signal Reception Troubleshooting” if you experience  
problems with time calibration signal reception.  
2. Press D (east) and B (west) to select the city code  
you want to use as your Home City.  
Current Time Setting  
This watch adjusts its time setting automatically in accordance with a time calibration  
signal. You also can perform a manual procedure to set the time and date, when  
necessary.  
The first thing you should do after purchasing this watch is to specify  
your Home City (the city where you normally will use the watch). For more  
information, see “To specify your Home City”.  
When using the watch outside the areas covered by the time signal transmitters,  
you will have to adjust the current time setting manually as required. See “To set the  
time and date manually” for more information about manual time settings.  
The U.S. time calibration signal can be picked up by the watch while in North  
America. The term “North America” in this manual refers to the area that consists of  
Canada, the continental United States, and Mexico.  
PM indicator  
Hour : Minutes  
Seconds  
LIS, LON  
: Lisbon, London  
MAD, PAR, ROM, BER, STO : Madrid, Paris, Rome, Berlin, Stockholm  
ATH  
: Athens  
Using this watch in a country covered by a time calibration signal that is different  
from the countries it supports may result in incorrect time indication due to local  
application of summer time, etc.  
MOW  
: Moscow  
HKG, BJS, TPE  
SEL, TYO  
HNL  
: Hong Kong, Beijing, Taipei  
: Seoul, Tokyo  
: Honolulu  
ANC  
: Anchorage  
YVR, LAX  
YEA, DEN  
MEX, CHI  
MIA, YTO, NYC  
YHZ  
: Vancouver, Los Angeles  
: Edmonton, Denver  
: Mexico City, Chicago  
: Miami, Toronto, New York  
: Halifax  
YYT  
: St. Johns  
1
 
Operation Guide 5173  
To toggle a city code time between Standard Time and Daylight Saving Time  
Receive successful  
Time calibration signal reception takes from two to  
seven minutes, but in some cases it can take as long  
as 14 minutes. Take care that you do not perform any  
button operations or move the watch during this time.  
When a signal receive operation is successful, GET  
appears on the upper display and the lower display  
shows the time and date of the successful operation.  
The watch will adjust its time setting in accordance  
with the information provided by the signal.  
1. In the World Time Mode, press D to display the city  
code (time zone) whose Standard Time/Daylight Saving  
Time setting you want to change.  
2. Hold down A for about three seconds to toggle between  
Daylight Saving Time (DST indicator displayed) and  
Standard Time (DST indicator not displayed).  
The watch will return to the Timekeeping Mode if you  
press A or if you do not perform any operation for  
about one or two minutes.  
ERR will appear on the upper display if the receive  
operation is not successful. The watch will not adjust  
its time setting in this case. Press A to return to the  
Timekeeping Mode.  
Receive failed  
DST indicator  
Swapping your Home City and World Time City  
You can use the procedure below to swap your Home City and World Time City. This  
changes your Home City to your World Time City, and your World Time City to your  
Home City. This capability can come in handy when you frequently travel between two  
cities in different time zones.  
If your current World Time City supports receipt of a time calibration signal, making  
it your Home City enables calibration signal reception.  
For information about which cities support time calibration signal reception, see “To  
specify your Home City”.  
Note  
• To interrupt a receive operation and return to the Timekeeping Mode, press any  
button.  
To swap your Home City and World Time City  
1. In the World Time Mode, use D to select the World Time City you want.  
To check the latest signal reception results  
In the Timekeeping Mode, press A to view the last successful receive time and date.  
Press A again to return to the previous screen.  
2. Hold down A and B until the watch beeps.  
This will make the World Time City you selected in step 1 your Home City, and  
cause the hour and minute hands to move to the current time in that city. At the  
same time, it will change the Home City you had selected prior to step 2 your  
World Time City, and cause the content of the upper and lower displays to change  
accordingly.  
After swapping the Home City and World Time City, the watch stays in the World  
Time Mode with the city that was selected as the Home City prior to step 2 now  
displayed as the World Time City.  
Date  
Hour : Minutes  
Stopwatch  
Signal Reception Troubleshooting  
Check the following points whenever you experience problems with signal reception.  
The stopwatch lets you measure elapsed time, split  
times, and two finishes.  
1/100 second  
Problem  
Probable Cause  
What you should do  
I can’t receive a You performed some button  
Perform manual receive at night  
or wait until the next auto receive  
operation is performed.  
Enter the Timekeeping Mode or  
World Time Mode and try again.  
Enter the Countdown Timer Mode  
and stop the countdown.  
Check to make sure the watch is  
in a location where it can receive  
the signal.  
The digital display range of the stopwatch is 23 hours,  
Hours  
time calibration  
signal.  
operation during auto receive.  
59 minutes, 59.99 seconds.  
The watch is not in the  
Timekeeping Mode or World  
Time Mode.  
The watch is in a location where  
the signal cannot be received for  
some reason.  
A countdown timer operation is in  
progress.  
Radio interference is often present  
during the day time, which can  
interfere with signal reception.  
The stopwatch continues to run, restarting from zero  
after it reaches its limit, until you stop it.  
The stopwatch measurement operation continues  
even if you exit the Stopwatch Mode.  
Exiting the Stopwatch Mode while a split time is  
frozen on the display clears the split time and returns  
to elapsed time measurement.  
All of the operations in this section are performed in  
the Stopwatch Mode, which you enter by pressing  
C.  
Minutes  
Seconds  
SPL indicator  
The time setting If the time is one hour off, the DST Change the DST setting to Auto  
is incorrect  
following signal  
reception.  
setting may be incorrect.  
DST.  
The Home City code setting is not Select the correct Home City code.  
correct for the area where you are  
using the watch.  
To measure times with the stopwatch  
Enter the home position  
adjustment mode and adjust the  
home positions.  
Elapsed Time  
The home positions of the hands  
are off.  
D
Start  
D
Stop  
D
D
A
Re-start  
Stop  
Clear  
For further information, see “Important!” and “Radio-controlled Atomic Timekeeping  
Precautions”.  
Split Time  
D
A
A
D
A
Start  
Split  
Split release  
Stop  
Clear  
(SPL indicator  
displayed)  
World Time  
Two Finishes  
World Time digitally displays the current time in one of 48  
Currently selected  
D
Start  
A
D
A
A
cities (29 time zones) around the world. A simple operation  
World Time City  
Split  
First runner  
finishes.  
Stop  
Second runner Display time of  
finishes. second runner.  
Split release  
Clear  
swaps your Home City with the currently selected World  
Time City.  
When you enter the World Time Mode, the current month  
and day of the World Time City appear first. After about  
one second, the current time appears.  
Display time of  
first runner.  
The times kept in the World Time Mode are synchronized  
with the time being kept in the Timekeeping Mode. If you  
feel that there is an error in any World Time Mode time,  
check to make sure you have the correct city selected as  
your Home City. Also check to make sure that the current  
time as shown in the Timekeeping Mode is correct.  
Times in the World Time Mode are based on UTC offsets.  
See the “City Code Table” at the back of this manual for  
information about the UTC offsets that are supported.  
Countdown Timer  
World Time hour  
Current time in  
You can set the countdown timer start time within a range  
of one minute to 60 minutes. An alarm sounds when the  
countdown reaches zero.  
Auto-repeat on indicator  
Start time (minutes)  
World Time City  
You also can select auto-repeat, which automatically  
restarts the countdown from the original value you set  
whenever zero is reached.  
All of the operations in this section are performed in the  
Countdown Timer Mode, which you enter by pressing  
C.  
All of the operations in this section are performed in the World Time Mode, which  
you enter by pressing C.  
Right Dial Hand  
The right dial hand shows the current hour in the World Time City in all modes.  
The right dial hand completes one revolution every 12 hours.  
Minutes  
To view the current time in another time zone  
In the World Time Mode, use D to scroll through available city codes (time zones).  
Holding down the button scrolls at high speed.  
When the city code (time zone) you want is selected, you can press A to display  
the date. After about one second, the watch will resume regular timekeeping.  
Seconds  
Number of the current  
repeat  
To use the countdown timer  
Press D while in the Countdown Timer Mode to start the countdown timer.  
When the end of the countdown is reached and auto-repeat is turned off, the  
alarm will sound for 10 seconds or until you stop it by pressing any button. The  
countdown time is reset to its starting value automatically after the alarm stops.  
When auto-repeat is turned on, the countdown will restart automatically without  
pausing when it reaches zero. The alarm sounds to signal when the countdown  
reaches zero. The countdown is repeated up to eight times, and then stops.  
The number of the current repeat (1 to 8) is shown in the lower display.  
The countdown timer measurement operation continues even if you exit the  
Countdown Timer Mode.  
Press A.  
One second  
Hour : Minutes Seconds  
Date  
To stop a countdown timer operation completely, first pause it (by pressing D),  
and then press A. This returns the countdown time to its starting value.  
3
 
Operation Guide 5173  
To configure countdown start time and auto-repeat settings  
Illumination  
1. While the countdown start time is on the display in the  
Countdown Timer Mode, hold down A for about three  
seconds until the minute setting of the countdown start  
time starts to flash. This is the setting mode.  
If the countdown start time is not displayed, use the  
procedure under “To use the countdown timer” to  
display it.  
An LED (light-emitting diode) illuminates the face of the  
watch for easy reading in the dark. The watch’s auto light  
switch turns on illumination automatically when you angle  
the watch towards your face.  
The auto light switch must be turned on (indicated by the  
auto light switch on indicator) for it to operate.  
See “Illumination Precautions” for other important  
information about using illumination.  
Auto light switch  
on indicator  
2. Press C to move the flashing in the sequence shown  
below, and select the setting you want to change.  
Start time (minutes)  
To illuminate the display manually  
In any mode (except a setting mode), press B to turn on  
the illumination for about one second.  
C
Start Time (Minutes)  
Auto-Repeat On/Off  
The above operation turns on illumination regardless of  
the current auto light switch setting.  
3. Perform the following operations, depending on which setting currently is selected  
on the display.  
While the start time setting is flashing, use D (+) and B (–) to change it.  
While the auto-repeat on/off setting (0N or 0FF) is flashing on the display,  
press D to toggle auto-repeat on (0N) and off (0FF).  
About the Auto Light Switch  
Turning on the auto light switch causes illumination to turn on, whenever you position  
your wrist as described below in any mode.  
Note that this watch features a “Full Auto LED Light”, so the auto light switch operates  
only when available light is below a certain level. It does not illuminate the display  
under bright light.  
4. Press A to exit the setting mode.  
The auto-repeat on indicator ( ) will appear in the upper display while this  
function is turned on.  
The auto light switch is always disabled, regardless of its on/off setting, when any  
Frequent use of auto-repeat and the alarm can run down battery power.  
one of the following conditions exists.  
While an alarm is sounding  
While a signal receive operation is in progress  
Alarms  
Moving the watch to a position that is parallel to the ground and then tilting it  
towards you more than 40 degrees causes illumination to turn on.  
Wear the watch on the outside of your wrist.  
When an alarm is turned on, the alarm tone will sound  
Alarm number  
when its alarm time is reached. One of the alarms is a  
snooze alarm, while the other four are one-time alarms.  
You also can turn on an Hourly Time Signal that causes  
the watch to beep twice every hour on the hour.  
There are five alarm screens numbered  
,
,
AL1 AL2  
for the one-time alarm, and a snooze  
AL4  
More than 40°  
Parallel to ground  
and  
AL3  
alarm screen indicated by  
. The Hourly Time  
.
SNZ  
Signal screen is indicated by  
SIG  
All of the operations in this section are performed in the  
Alarm Mode, which you enter by pressing C.  
Warning!  
Alarm time  
(Hour : Minutes)  
Always make sure you are in a safe place whenever you are reading the  
display of the watch using the auto light switch. Be especially careful when  
running or engaged in any other activity that can result in accident or injury.  
Also take care that sudden illumination by the auto light switch does not  
startle or distract others around you.  
When you are wearing the watch, make sure that its auto light switch is turned  
off before riding a bicycle or operating a motorcycle or any other motor  
vehicle. Sudden and unintended operation of the auto light switch can create a  
distraction, which can result in a traffic accident and serious personal injury.  
To set an alarm time  
1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose  
time you want to set is displayed.  
To turn the auto light switch on and off  
In the Timekeeping Mode, hold down B for about three seconds to toggle the auto  
light switch on (auto light switch on indicator displayed) and off (auto light switch on  
indicator not displayed).  
The auto light switch on indicator is on the display in all modes while the auto light  
switch is turned on.  
To set a one-time alarm, display alarm screen  
,
AL1  
. To set the snooze alarm,  
,
or  
AL2 AL3 AL4  
display the screen.  
SNZ  
is the hourly time signal setting.  
SIG  
The snooze alarm repeats every five minutes.  
2. After you select an alarm, hold down A for about three seconds until the hour  
setting of the alarm time starts to flash. This is the setting mode.  
This operation turns on the alarm automatically.  
Power Supply  
This watch is equipped with a solar cell and a special rechargeable battery (secondary  
battery) that is charged by the electrical power produced by the solar cell. The  
illustration shown below shows how you should position the watch for charging.  
3. Press C to move the flashing between the hour and minute settings.  
4. While a setting is flashing, use D (+) and B (–) to change it.  
5. Press A to exit the setting mode.  
Example:  
Solar cell  
Orient the watch so its face is  
pointing at a light source.  
Alarm Operation  
The illustration shows how to  
position a watch with a resin band.  
Note that charging efficiency  
drops when any part of the solar  
cell is blocked by clothing, etc.  
You should try to keep the watch  
outside of your sleeve as much  
as possible. Charging is reduced  
significantly if the face is even only  
partially covered.  
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the  
watch is in. In the case of the snooze alarm, the alarm operation is performed a total  
of seven times, every five minutes, or until you turn the alarm off.  
Alarm and Hourly Time Signal operations are performed in accordance with the  
current time in your Home City, as kept in the Timekeeping Mode.  
To stop the alarm tone after it starts to sound, press any button.  
Performing any one of the following operations during a 5-minute interval between  
snooze alarms cancels the current snooze alarm operation.  
Displaying the Timekeeping Mode setting screen  
Displaying the  
setting screen  
SNZ  
Important!  
To turn an alarm on and off  
Alarm on indicator  
Storing the watch for long periods in an area where there is no light or wearing it in  
such a way that it is blocked from exposure to light can cause rechargeable battery  
power to run down. Be sure that the watch is exposed to bright light whenever  
possible.  
This watch uses a special rechargeable battery to store power produced by the  
solar cell, so regular battery replacement is not required. However, after very long  
use, the rechargeable battery may lose its ability to achieve a full charge. If you  
experience problems getting the special rechargeable battery to charge fully,  
contact your dealer or CASIO distributor about having it replaced.  
Never try to remove or replace the watch’s special battery yourself. Use of the  
wrong type of battery can damage the watch.  
1. In the Alarm Mode, use D to select an alarm.  
2. Press A to toggle it on and off.  
Snooze alarm indicator  
Turning on an alarm (  
AL4 SNZ  
on its Alarm Mode screen.  
,
,
,
AL1 AL2 AL3  
) displays the alarm on indicator  
or  
In all modes, the alarm on indicator is shown for  
any alarm that currently is turned on.  
The alarm on indicator flashes while the alarm is  
sounding.  
The snooze alarm indicator flashes while the  
snooze alarm is sounding and during the 5-minute  
intervals between alarms.  
The current time and all other settings return to their initial factory defaults  
whenever battery power drops to Level 5 (C: Charge) and when you have the  
battery replaced.  
ON  
Turn on the watch’s Power Saving function and keep it in an area normally exposed  
to bright light when storing it for long periods. This helps to keep the rechargeable  
battery from going dead.  
To turn the Hourly Time Signal on and off  
1. In the Alarm Mode, use D to select the Hourly  
Time Signal ( ).  
Hourly time signal on indicator  
SIG  
2. Press A to toggle it on and off.  
The Hourly Time Signal on indicator is shown  
on the display in all modes while this function is  
turned on.  
4
 
Operation Guide 5173  
Battery Power Indicator and Power Recovery Mode indicator  
The battery power indicator indicates you the current status of the rechargeable  
battery’s power.  
Timekeeping  
You can adjust the Home City time and date in the Timekeeping Mode manually.  
You also can simultaneously display the current time in one other time zone, by  
specifying a Dual Time City.  
For information about selecting a Dual Time City, see “To specify the Dual Time  
City”.  
Battery Power indicator  
Level  
Battery Power Indicator  
Function Status  
1 (H)  
All functions enabled  
Pressing D in the Timekeeping Mode will cycle the lower display between the  
screens shown below.  
Home City Date  
Home City Time  
2 (M)  
3 (L)  
All functions enabled  
D
Auto and manual  
receive, illumination,  
and beeper disabled  
(Charge Soon Alert)  
4
Except for  
Dual Time  
(C: Charge)  
timekeeping, all  
functions and display  
indicators disabled  
D
5
All functions disabled  
D
(C: Charge)  
The flashing  
indicator at Level 3 (L) tells you that battery power is very low,  
LOW  
and that exposure to bright light for charging is required as soon as possible.  
At Level 5 (C: Charge), all functions are disabled and settings return to their initial  
factory defaults. Once the battery reaches Level 2 (M) after falling to Level 5 (C:  
Charge), reconfigure the current time, date, and other settings.  
Display indicators reappear as soon as the battery is charged from Level 5 (C:  
Charge) to Level 2 (M).  
The watch’s Home City code setting will change automatically to TYO (Tokyo)  
whenever the battery drops to Level 5 (C: Charge). With this Home City code  
setting, the watch is configured to receive the time calibration signals of Japan.  
If you are using the watch in North America or Europe, or China you will need to  
change the Home City code setting to match your location whenever the battery  
drops to Level 5 (C: Charge).  
Read This Before You Set the Time and Date!  
This watch is preset with a number of city codes, each of which represents the time  
zone where that city is located. When setting the time, it is important that you first  
select the correct city code for your Home City (the city where you normally use the  
watch). If your location is not included in the preset city codes, select the preset city  
code that is in the same time zone as your location.  
Note that all of the times for the World Time City codes and Dual Time City are  
displayed in accordance with the time and date settings you configure for the  
Timekeeping Mode.  
To set the time and date manually  
Leaving the watch exposed to direct sunlight or some other very strong light source  
can cause the battery power indicator to show a reading temporarily that is higher  
than the actual battery level. The correct battery level should be indicated after a  
few minutes.  
1. In the Timekeeping Mode, hold down A for about five  
seconds until the left dial hand points to T1 and the city  
code flashes on the upper display. This is the setting  
mode.  
Power recovery  
mode indicator  
Overuse of display illumination or the beeper can  
cause the R (Recover) indicator to appear in the upper  
display, which indicates that the watch is in the battery  
power recovery mode. Face illumination, the alarm,  
the countdown timer alarm, time signals, and all hand  
operations are disabled in the power recovery mode.  
The watch continues to keep time internally, so regular  
timekeeping and function will resume as soon as battery  
power recovers to normal levels, which is indicated when  
the R indicator disappears.  
2. Use D and B to select the city code you want.  
Make sure you select your Home City code before  
changing any other setting.  
For full information on city codes, see the “City Code  
Table”.  
3. Press C to change the flashing screen content in the sequence shown below to  
select the other settings.  
City Code  
DST  
12/24-Hour Format  
Month  
Seconds  
Year  
Hour  
If R appears frequently, it probably means that remaining  
battery power is low. Leave the watch in bright light for  
some time to allow it to charge.  
Power Saving  
Day  
Minutes  
Charging Precautions  
Certain charging conditions can cause the watch to become very hot. Avoid leaving  
the watch in the areas described below whenever charging its rechargeable battery.  
Also note that allowing the watch to become very hot can cause its liquid crystal  
display to black out. The appearance of the LCD should become normal again when  
the watch returns to a lower temperature.  
4. When the timekeeping setting you want to change is flashing, use D or B to  
change it as described below.  
Screen:  
To do this:  
Do this:  
Change the city code.  
Use D (east) and B (west).  
Warning!  
Press D.  
Cycle between Auto DST (  
), Daylight  
) and  
Leaving the watch in bright light to charge its rechargeable battery can cause it  
to become quite hot. Take care when handling the watch to avoid burn injury.  
The watch can become particularly hot when exposed to the following  
conditions for long periods.  
Saving Time (  
).  
) and Standard Time  
(
Press D.  
Toggle between 12-hour (  
24-hour (  
) timekeeping.  
- On the dashboard of a car parked in direct sunlight  
- Too close to an incandescent lamp  
Press D.  
Reset the seconds to  
.
- Under direct sunlight  
Change the hour and minutes.  
Change the year, month, or day.  
Use D (+) and B (–).  
Charging Guide  
After a full charge, timekeeping remains enabled for up to about six months.  
The following table shows the amount of time the watch needs to be exposed to  
light each day in order to generate enough power for normal daily operations.  
Press D.  
) and  
Toggle between Power Saving on (  
off ( ).  
Exposure Level (Brightness)  
Outdoor sunlight (50,000 lux)  
Approximate Exposure Time  
8 minutes  
5. Press A twice to exit the setting mode.  
Sunlight through a window (10,000 lux)  
Daylight through a window on a cloudy day (5,000 lux)  
Indoor fluorescent lighting (500 lux)  
30 minutes  
48 minutes  
8 hours  
For details about the Daylight Saving Time setting, see “To change the Daylight  
Saving Time (summer time) setting”. For information about Power Saving, see  
“To turn Power Saving on and off”.  
Auto DST (  
) can be selected only while LIS, LON, MAD, PAR, ROM, BER,  
STO, ATH, MOW, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX,  
CHI, MIA, YTO, NYC, YHZ, or YYT is selected as the Home City code. For more  
information, see “Daylight Saving Time (DST)” below.  
The day of the week is displayed automatically in accordance with the date  
(year, month, and day) settings.  
For details about the battery operating time and daily operating conditions, see the  
“Power Supply” section of the Specifications.  
Stable operation is promoted by frequent exposure to light.  
Recovery Times  
The table below shows the amount exposure that is required to take the battery from  
one level to the next.  
12-hour and 24-hour timekeeping  
With the 12-hour format, the PM (P) indicator appears to the left of the hour digits  
for times in the range of noon to 11:59 p.m. and no indicator appears for times in  
the range of midnight to 11:59 a.m.  
Exposure Level  
(Brightness)  
Approximate Exposure Time  
Level 5  
Level 4  
Level 3  
Level 2  
Level 1  
With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without  
any indicator.  
Outdoor sunlight  
2 hours  
6 hours  
21 hours  
78 hours  
126 hours  
– – –  
6 hours  
21 hours  
34 hours  
– – –  
(50,000 lux)  
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is  
applied in all other modes.  
Sunlight through a window  
(10,000 lux)  
Daylight through a window  
on a cloudy day (5,000 lux)  
Indoor fluorescent lighting  
(500 lux)  
10 hours  
106 hours  
The above exposure time values are all for reference only. Actual required  
exposure times depend on lighting conditions.  
5
 
Operation Guide 5173  
To adjust the home positions manually  
Daylight Saving Time (DST)  
Daylight Saving Time (summer time) advances the time setting by one hour from  
Standard Time. Remember that not all countries or even local areas use Daylight  
Saving Time.  
1. In the Timekeeping Mode, hold down D for about three  
seconds until H-SET appears on the upper display and  
“Sub” flashes on the lower display.  
Correct dial hand  
positions  
The time calibration signals transmitted from Mainflingen (Germany), Anthorn  
(England), and Fort Collins (the United States) include both Standard Time and DST  
data. When the Auto DST setting is turned on, the watch switches between Standard  
Time and DST (Daylight Saving Time) automatically in accordance with the signals.  
Though the time calibration signals transmitted by the Fukushima and Fukuoka/  
Saga, Japan transmitters include summer time data, summer time currently is not  
implemented in Japan (as of 2010).  
The dial hands are in their correct home positions  
when the left dial hand moves to C (Charge) and the  
right dial hand moves to 12. If they don’t, use B to  
adjust the left dial hand position and D to adjust the  
right dial hand position.  
2. After confirming that both dial hands are in their correct  
home positions, press C.  
This will change to hour hand and minute hand home  
position manual correction.  
The default DST setting is Auto DST (  
) whenever you select LIS, LON, MAD,  
PAR, ROM, BER, STO, ATH, MOW, TYO, ANC, YVR, LAX, YEA, DEN, MEX, CHI,  
MIA, YTO, NYC, YHZ, or YYT as your Home City code.  
The hour and minute hands are in their correct home  
positions if they are at 12 o’clock. If they are not, use  
D (+) and B (–) to adjust their positions as required.  
Pressing C here will return to the setting at the  
beginning of step 2.  
If you experience problems receiving the time calibration signal in your area,  
it probably is best to switch between Standard Time and Daylight Saving Time  
(summer time) manually.  
To change the Daylight Saving Time (summer time) setting  
1. In the Timekeeping Mode, hold down A for about five  
seconds until the left dial hand points to T1 and the city  
code flashes on the upper display. This is the setting  
mode.  
Correct hour and minute  
hand positions  
3. After everything is the way you want, press A to return  
to the Timekeeping Mode.  
After you complete the home position adjustment  
procedure, place the watch in a location that allows  
for good time calibration signal reception, and then  
perform a manual receive operation. See “To perform  
manual receive” for more information.  
2. Press C. This will display the DST setting screen.  
3. Use D to cycle through the DST settings in the sequence  
shown below.  
DST indicator  
Auto DST (  
)
DST off (  
)
OFF  
DST on (  
)
ON  
Reference  
This section contains more detailed and technical information about watch operation.  
It also contains important precautions and notes about the various features and  
functions of this watch.  
4. When the setting you want is selected, press A twice to exit the setting mode.  
The DST indicator appears to indicate that Daylight Saving Time is turned on.  
Dual Time  
Power Saving Function  
Dual Time lets you display the current time in another time zone called your “Dual  
Time City”, in addition to your Home City’s current time. This feature is very handy for  
business professionals and others who need to keep track of the current time in two  
different time zones.  
When turned on, the Power Saving function enters a sleep  
state automatically whenever the watch is left in an area  
for a certain period where it is dark. The table below shows  
how watch functions are affected by the Power Saving  
function.  
For information about how to display the current time in the Dual Time City in the  
lower display, see “Timekeeping”.  
To specify the Dual Time City  
1. In the Timekeeping Mode, hold down A for about five  
Currenty selected  
seconds until the left dial hand points to T1 and the city  
Dual Time City  
code flashes on the upper display. This is the setting  
Elapsed Time in Dark  
Hands and Display  
Operation  
mode.  
Left dial hand  
60 to 70 minutes  
Left dial hand: PS; Right dial  
hand: “12”; Other hands:  
Normal; Display: Blank  
All functions enabled, except  
for displays  
2. Press A again. The left dial hand will move to T2 and  
the current Dual Time City code will start to flash on  
the upper display. This is the Dual Time City selection  
screen.  
6 or 7 days  
Left dial hand: PS; Other  
Auto receive, beeper tone,  
hands: Stopped at 12 o’clock; illumination, and display  
Display: Blank  
disabled  
3. Use D (east) and B (west) to scroll through the  
available city codes.  
See the “City Code Table” for information about city  
codes.  
Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.  
The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch  
is already in the sleep state when 6:00 AM arrives, however, it will remain in the  
sleep state.  
4. Press A to exit the setting mode.  
To recover from the sleep state  
Perform any one of the following operations.  
Move the watch to a well-lit area.  
Press any button.  
Correction of Hand Home Positions  
The hour and minute hands of the watch can be thrown off by exposure to strong  
magnetism or impact. The watch is designed to perform hour and minute hand  
correction automatically every hour in order to correct variation within the range of  
–55 minutes to +5 minutes.  
You can trigger auto hour and minute hand position correction manually, if you  
want.  
If the variation is greater than –55 minutes to +5 minutes, you can trigger auto hand  
position correction manually or perform correction of the hour and minute hand  
home positions manually.  
Angle the watch towards your face for reading.  
To turn Power Saving on and off  
1. In the Timekeeping Mode, hold down A for about five  
seconds until the left dial hand points to T1 and the city  
code flashes on the upper display. This is the setting  
mode.  
2. Press C nine times until PS appears in the upper  
display and a flashing ON or OFF appears in the lower  
display. This is the Power Saving ON/OFF screen.  
If the dial hands are off, you will need to correct their home positions manually.  
3. Press D to toggle Power Saving on (ON) and off  
(OFF).  
4. Press A twice to exit the setting mode.  
To trigger auto correction of hand home positions  
In the Timekeeping Mode, hold down D for about six  
seconds, until H-SET starts flashing on the upper display.  
Note that H-SET will appear on the upper display about  
three seconds after you depress D, but you should  
not release the button until H-SET starts flashing. The  
flashing H-SET indicates that auto hour and minute hand  
home position correction has started.  
Auto hour and minute hand home position correction  
takes about three and a half minutes to complete. Do not  
perform any other watch operation during that time.  
On/Off status  
Radio-controlled Atomic Timekeeping Precautions  
Strong electrostatic charge can cause the time setting to be thrown off.  
The time calibration signal bounces off the ionosphere. Because of this, such  
factors as changes in the reflectivity of the ionosphere, as well as movement of the  
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of  
day may change the reception range of the signal and make reception temporarily  
impossible.  
Even if the time calibration signal is received properly, certain conditions can cause  
the time setting to be off by up to one second.  
The watch will return to the Timekeeping Mode automatically after auto correction  
is complete.  
You will not be able to trigger auto correction while the watch is in the Countdown  
Timer Mode or while a countdown timer operation is in progress.  
To interrupt an ongoing auto correction, press D. This will return to the  
Timekeeping Mode.  
The current time setting in accordance with the time calibration signal takes priority  
over any time settings you make manually.  
The watch is designed to update the date and day of the week automatically for  
the period January 1, 2000 to December 31, 2099. Setting of the date by the time  
calibration signal cannot be performed starting from January 1, 2100.  
This watch can receive signals that differentiate between leap years and non-leap  
years.  
Though this watch is designed to receive both time data (hour, minutes, seconds)  
and date data (year, month, day), certain signal conditions can limit reception to  
time data only.  
If you are in an area where proper time calibration signal reception is impossible,  
the watch keeps the time with the precision noted in “Specifications”.  
If you have problems with proper time calibration signal reception or if the time  
setting is wrong after signal reception, check your current city code, and DST  
(Daylight Saving Time) settings.  
The Home City setting reverts to the initial default of TYO (Tokyo) whenever the  
battery power drops to Level 5 (C: Charge) or when you have the rechargeable  
battery replaced. If this happens, change the Home City to the setting you want.  
6
 
Operation Guide 5173  
Transmitters  
Alarms: Four one-time alarms; one snooze alarm; Hourly Time Signal  
The time calibration signal received by this watch depends on the currently selected  
Home City.  
When a U.S. time zone is selected, the watch receives the time calibration signal  
transmitted from the United States (Fort Collins).  
Illumination: LED (light-emitting diode); Auto Light Switch (Full Auto LED Light  
operates only in the dark)  
Other: Power Saving; Auto hour and minute hand home position correction each hour  
Power Supply: Solar cell and one rechargeable battery  
Approximate battery operating time: 6 months (from full charge to Level 5 (C:  
Charge)) under the following conditions:  
Watch not exposed to light  
Internal timekeeping  
When a Japanese time zone is selected, the watch receives the time calibration  
signals transmitted from Japan (Fukushima and Fukuoka/Saga).  
When a European time zone is selected, the watch receives the time calibration  
signals transmitted from Germany (Mainflingen) and England (Anthorn).  
When a China time zone is selected, the watch receives the time calibration signal  
transmitted from China (Shangqiu City).  
When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW  
(which can receive both the Anthorn and Mainflingen signals), the watch first tries  
to pick up the signal it last received successfully. If that fails, it tries the other signal.  
For the first receive after you select your Home City, the watch tries the nearest  
signal first (Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER, STO,  
ATH, and MOW).  
Display on 18 hours per day, sleep state 6 hours per day  
1 illumination operation (1.5 seconds) per day  
10 seconds of alarm operation per day  
4 minutes of signal reception per day  
Frequent use of illumination runs down the battery. Particular care is required when  
using the auto light switch.  
Auto Return Features  
City Code Table  
If you leave the watch with a flashing setting on the display for two or three minutes  
without performing any operation, the watch will exit the setting mode automatically.  
The watch will return to the Timekeeping Mode automatically if you do not perform  
any operation for two or three minutes in the Alarm Mode.  
City  
Code  
UTC Offset/  
GMT Differential  
City  
Code  
UTC Offset/  
GMT Differential  
City  
City  
PPG  
HNL  
ANC  
YVR  
LAX  
YEA  
DEN  
MEX  
CHI  
Pago Pago  
Honolulu  
Anchorage  
Vancouver  
Los Angeles  
Edmonton  
Denver  
–11  
–10  
–9  
MOW  
JED  
THR  
DXB  
KBL  
KHI  
DEL  
DAC  
RGN  
BKK  
SIN  
Moscow  
Jeddah  
Tehran  
Dubai  
Kabul  
Karachi  
Delhi  
+3  
High-Speed Movement  
+3.5  
+4  
+4.5  
+5  
+5.5  
+6  
+6.5  
+7  
The D and B buttons are used to change the hand setting in various setting  
modes. In most cases, holding down these buttons will start high-speed movement  
of the applicable hand(s).  
–8  
–7  
–6  
Mexico City  
Chicago  
Dhaka  
Initial Screens  
Yangon  
Bangkok  
Singapore  
Hong Kong  
Beijing  
When you enter the World Time Mode or Alarm Mode, the data you were viewing  
when you last exited the screen will appear first.  
MIA  
YTO  
NYC  
SCL  
YHZ  
YYT  
RIO  
Miami  
Toronto  
–5  
–4  
New York  
Santiago  
Halifax  
St. Johns  
Rio De Janeiro  
Praia  
HKG  
BJS  
TPE  
Timekeeping  
+8  
Resetting the seconds to 00 while the current count is in the range of 30 to 59  
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are  
reset to 00 without changing the minutes.  
Taipei  
–3.5  
–3  
–1  
SEL  
Seoul  
Tokyo  
+9  
TYO  
ADL  
GUM  
SYD  
NOU  
WLG  
The year can be set in the range of 2000 to 2099.  
Adelaide  
Guam  
Sydney  
Noumea  
Wellington  
+9.5  
+10  
RAI  
The watch’s built-in full automatic calendar makes allowances for different month  
lengths and leap years. Once you set the date, there should be no reason to  
change it except when battery power drops to Level 5 (C: Charge).  
The current time for all city codes in the Timekeeping Mode and World Time Mode  
is calculated in accordance with the Coordinated Universal Time (UTC) for each  
city, based on your Home City time setting.  
UTC  
LIS  
Lisbon  
London  
Madrid  
Paris  
Rome  
Berlin  
Stockholm  
Athens  
Cairo  
0
LON  
MAD  
PAR  
ROM  
BER  
STO  
ATH  
CAI  
+11  
+12  
Based on data as of December 2009.  
The rules governing global times  
(UTC offset and GMT differential) and  
summer time are determined by each  
individual country.  
+1  
+2  
Illumination Precautions  
Illumination may be hard to see when viewed under direct sunlight.  
Illumination turns off automatically whenever an alarm sounds.  
Frequent use of illumination runs down the battery.  
JRS  
Jerusalem  
Auto light switch precautions  
Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light  
switch to operate when it is not needed, which shortens battery life. If you want to  
wear the watch on the inside of your wrist, turn off the auto light switch feature.  
Illumination may not turn on if the face of the watch is more  
More than 15 degrees  
too high  
than 15 degrees above or below parallel. Make sure that the  
back of your hand is parallel to the ground.  
Illumination turns off in about one second, even if you keep  
the watch pointed towards your face.  
Static electricity or magnetic force can interfere with proper  
operation of the auto light switch. If illumination does not  
turn on, try moving the watch back to the starting position  
(parallel with the ground) and then tilt it back toward you  
again. If this does not work, drop your arm all the way down  
so it hangs at your side, and then bring it back up again.  
Under certain conditions, illumination may not turn on until about one second after  
you turn the face of the watch towards you. This does not necessarily indicate  
malfunction of the auto light switch.  
You may notice a very faint clicking sound coming from the watch when it is shaken  
back and forth. This sound is caused by mechanical operation of the auto light  
switch, and does not indicate a problem with the watch.  
Specifications  
Accuracy at normal temperature: 15 seconds a month (with no signal calibration)  
Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week  
Time format: 12-hour and 24-hour  
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099  
Other: Home City code (can be assigned one of 48 city codes); Standard Time/  
Daylight Saving Time (summer time); Simultaneous Home Time City/Dual  
Time City indication  
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds)  
Time Calibration Signal Reception: Auto receive 6 times a day (Remaining  
auto receives cancelled as soon as one is  
successful) (5 times a day for the China signal);  
Manual receive  
Receivable Time Calibration Signals:  
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz);  
Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fort  
Collins, Colorado, the United States (Call Sign: WWVB, Frequency:  
60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0  
kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz);  
Shangqiu City, Henan Province, China (Call Sign: BPC, Frequency:  
68.5 kHz)  
World Time: 48 cities (29 time zones) and Coordinated Universal Time  
Other: Daylight Saving Time/Standard Time; Home City/World Time City Swapping  
Stopwatch:  
Measuring unit: 1/100 second  
Measuring capacity: 23:59’ 59.99”  
Measuring modes: Elapsed time, split time, two finishes  
Countdown Timer:  
Measuring unit: 1 second  
Input range: 1 minute to 60 minutes (1-minute increments)  
Other: Auto-repeat timing  
7
 

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