Casio Watch GW69001V User Manual

MO0905-EA  
Operation Guide 3179  
Getting Acquainted  
Congratulations upon your selection of this CASIO watch. To get the most out of your  
purchase, be sure to read this manual carefully.  
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 rechargeable battery. Leaving or using the  
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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.  
Solar cell  
When you are not wearing the watch on your wrist,  
position the face so it is pointed at a source of bright  
light.  
You should try to keep the watch outside of your sleeve  
as much as possible. Charging is reduced significantly if  
the face is covered only partially.  
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.  
See “Power Saving Function” for more information.  
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.  
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.  
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.  
Button operations are indicated using the letters shown in the illustration.  
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.  
Battery charges in the light.  
Battery discharges in the dark.  
Bright Light  
Solar cell  
(Converts light to  
electrical power.)  
Electrical  
energy  
All  
functions  
enabled  
LEVEL 1  
LEVEL 2  
LEVEL 3  
LEVEL 4  
LEVEL 1  
LEVEL 2  
Some or all  
LEVEL 3  
LEVEL 4  
Dis-  
functions  
disabled  
Charge  
charge  
Rechargeable battery  
World Time Mode  
Alarm Mode  
General Guide  
Press C to change from mode to mode.  
In any mode (except when a setting screen is on the display), press L to illuminate  
the display.  
Timekeeping Mode  
Press C.  
Countdown Timer Mode  
Stopwatch Mode  
Radio-controlled Atomic Timekeeping  
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).  
You can disable time signal reception, if you want. See “To turn auto receive on and  
off” for more information.  
Under factory default settings, auto receive is turned off for all of the following city  
codes: MOW (Moscow), HNL (Honolulu), and ANC (Anchorage). For details about  
turning on auto receive for these city codes, see “To turn auto receive on and off”.  
Current Time Setting  
Time Calibration Signal Reception  
There are two different methods you can use to receive the time calibration signal:  
auto receive and manual receive.  
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” below.  
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 “Timekeeping”  
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.  
Auto Receive  
With auto receive, the watch receives the time calibration signal automatically up to  
6 times a day (5 times a day for the Chinese calibration signal). When any auto  
receive is successful, the remaining auto receive operations are not performed. For  
more information, see “About Auto Receive”.  
Manual Receive  
Manual receive lets you start a time calibration receive operation with the press of a  
button. For more information, see “To perform manual receive”.  
Important!  
To specify your Home City  
When getting ready to receive the time calibration signal, position the watch as  
shown in the nearby illustration, with its 12 o’clock side pointing towards a window.  
This watch is designed to receive a time calibration signal late at night. Because of  
this, you should place the watch near a window as shown in the illustration when you  
take it off at night. Make sure there are no metal objects nearby.  
1. In the Timekeeping Mode, hold down A until the city  
PM indicator  
code starts to flash, which indicates the setting screen.  
2. Press D (east) and B (west) to select the city code  
you want to use as your Home City.  
LIS, LON : Lisbon, London  
MAD, PAR, ROM, BER, STO : Madrid, Paris,  
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Rome, Berlin, Stockholm  
ATH  
MOW  
: Athens  
12 o’clock  
or  
: Moscow  
Seconds  
Hour : Minutes  
City code  
HKG, BJS, TPE : Hong Kong, Beijing, Taipei  
SEL, TYO : Seoul, Tokyo  
HNL  
ANC  
: Honolulu  
: Anchorage  
YVR, LAX : Vancouver, Los Angeles  
YEA, DEN: Edmonton, Denver  
MEX, CHI : Mexico City, Chicago  
Make sure the watch is facing the right way.  
Proper signal reception can be difficult or even impossible under the conditions listed  
NYC  
YHZ  
YYT  
: New York  
: Halifax  
: St.Johns  
below.  
3. Press A to exit the setting screen.  
Normally, your watch should show the correct time as soon as you select your Home  
City code. If it does not, it should adjust automatically after the next auto receive  
operation (in the middle of the night).You also can perform manual receive or you  
can set the time manually.  
The watch will receive the time calibration signal automatically from the applicable  
transmitter (in the middle of the night) and update its settings accordingly. For  
information about the relationship between city codes and transmitters, see  
“Important!” under “Time Calibration Signal Reception” and “Transmitters”.  
See the maps under “Approximate Reception Ranges” for information about the  
reception ranges of the watch.  
Inside or  
among  
buildings  
Inside a  
vehicle  
Near  
Near a  
construction tension power behind  
appliances, site, airport, lines mountains  
Near high-  
Among or  
household  
office  
or other  
equipment, sources of  
or a mobile electrical  
phone  
noise  
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Operation Guide 3179  
3. Press C to move the flashing between the hour and minute settings.  
Signal Reception Troubleshooting  
4. While a setting is flashing, use D (+) and B (–) to change it.  
With the 12-hour format, set the time correctly as a.m. or p.m. (P indicator).  
5. Press A to exit the setting screen.  
Check the following points whenever you experience problems with signal reception.  
Problem  
Probable Cause  
What you should do  
Enter the Timekeeping  
Mode and try again.  
Cannot perform The watch is not in the  
manual receive. Timekeeping Mode.  
Alarm Operation  
Your current Home City is not one Select LIS, LON, MAD,  
of the following: LIS, LON, MAD,  
PAR, ROM, BER, STO, ATH,  
MOW, HKG, BJS,TPE, SEL,TYO,  
HNL, ANC,YVR, LAX, YEA, DEN,  
MEX, CHI, NYC, YHZ, or YYT  
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, until you turn the alarm off.  
Alarm and Hourly Time Signal operations are performed in accordance with the  
Timekeeping Mode time.  
PAR, ROM, BER, STO,  
ATH, MOW, HKG, BJS,  
TPE, SEL,TYO, HNL, ANC,  
YVR, LAX, YEA, DEN,  
MEX, CHI, NYC, YHZ,  
or YYT as your Home City.  
To stop the alarm tone after it starts to sound, press any button.  
Performing any one of the operations below during a 5-minute interval between  
snooze alarms cancels the current snooze alarm operation.  
Displaying the Timekeeping Mode setting screen  
Auto receive is You changed the time setting  
Perform manual signal  
receive or wait until the next  
auto signal receive  
turned on, but  
the RCVD  
indicator does  
not appear on  
the display.  
manually.  
The DST setting was changed  
Displaying the SNZ setting screen  
manually in the World Time Mode.  
operation is performed.  
You pressed a button while signal Check to make sure the  
To test the alarm  
In the Alarm Mode, hold down D to sound the alarm.  
receive was in progress.  
watch is in a location where  
it can receive the signal.  
Even if receive is successful, the  
RCVD indicator will disappear  
from the display each day when  
the first auto receive operation of  
the day is performed.  
Time data (hour, minutes, seconds)  
only was received during the last  
receive operation. The RCVD  
indicator appears only when time  
data and date data (year, month,  
day) are both received.  
To turn an alarm on and off  
1. In the Alarm Mode, use D to select an alarm.  
Alarm on indicator  
2. Press B to toggle it on and off.  
Snooze alarm  
indicator  
Turning on a alarm (AL1, AL2, AL3, AL4 or  
SNZ) displays the alarm on indicator on its Alarm Mode  
screen.  
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.  
Time setting  
is incorrect  
following  
signal  
If the time is one hour off, the DST Change the DST setting to  
setting may be incorrect. Auto DST.  
The Home City code setting is not Select the correct Home  
ON  
correct for the area where you are  
using the watch.  
City code.  
reception.  
To turn the Hourly Time Signal on and off  
1. In the Alarm Mode, use D to select the Hourly Time  
Signal (SIG).  
2. Press B to toggle it on and off.  
For further information, see “Important!” under “Time Calibration Signal Reception”  
and “Radio-controlled Atomic Timekeeping Precautions”.  
Hourly time signal  
on indicator  
The Hourly Time Signal on indicator is shown on the  
display in all modes while this function is turned on.  
World Time  
World Time shows the current time in 48 cities (31 time  
zones) around the world.  
City code  
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.  
Stopwatch  
The stopwatch lets you measure elapsed time, split times,  
and two finishes.  
The display range of the stopwatch is 23 hours, 59  
minutes, 59.99 seconds.  
The stopwatch continues to run, restarting from zero  
after it reaches its limit, until you stop it.  
Hours  
Select a city code in the World Time Mode to display the  
Current time in  
selected city  
current time in any particular time zone around the  
globe. See the “City Code Table” for information about  
the UTC differential settings that are supported.  
The stopwatch measurement operation continues even  
All of the operations in this section are performed in the World Time Mode, which  
you enter by pressing C.  
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.  
Seconds  
To view the time in another city  
While in the World Time Mode, use the D (eastward) and B (westward) to scroll  
through the city codes (time zones).  
1/100 second  
Minutes  
Pressing the D and B at the same time will jump to the UTC time zone.  
To measure times with the stopwatch  
Elapsed Time  
To toggle a city code time between Standard Time and Daylight Saving Time  
1. In the World Time Mode, use D and B to display the  
city code (time zone) whose Standard Time/Daylight  
Saving Time setting you want to change.  
D
B
D
D
D
Start  
Stop  
Re-start  
Stop  
Clear  
2. Hold down A to toggle between Daylight Saving Time  
(DST indicator displayed) and Standard Time (DST  
indicator not displayed).  
Split Time  
D
D
B
B
B
The DST indicator is shown on the World Time Mode  
screen while Daylight Saving Time is turned on.  
Start  
Split  
(SPL displayed)  
Split release  
Stop  
Clear  
DST indicator  
Note that the Standard Time/Daylight Saving Time  
setting affects only the currently displayed city code.  
Other city codes are not affected.  
Two Finishes  
B
B
D
B
D
Note that you cannot switch between Standard Time  
and Daylight Saving Time while UTC is selected as the  
city code.  
Start  
Split  
Stop  
Split release  
Display time of  
second runner.  
Clear  
First runner finishes. Second runner  
Display time of first finishes.  
runner.  
Alarms  
Countdown Timer  
The Alarm Mode gives you a choice of four one-time  
alarms and one snooze alarm.  
Alarm number  
You can set the countdown timer within a range of one  
minute to 24 hours. An alarm sounds when the countdown  
reaches zero.  
All of the operations in this section are performed in the  
Countdown Timer Mode, which you enter by pressing  
C.  
Also use the Alarm Mode to turn the Hourly Time Signal  
(SIG) on and off.  
There are five alarm screens numbered AL1, AL2,  
AL3 and AL4 for the one-time alarm, and a snooze  
alarm screen indicated by SNZ. The Hourly Time  
Signal screen is indicated by SIG.  
Countdown End Beeper  
All of the operations in this section are performed in the  
Alarm Mode, which you enter by pressing C.  
Hours  
Minutes  
Seconds  
The countdown end beeper lets you know when the  
countdown reaches zero. The beeper stops after about 10  
seconds or when you press any button.  
Alarm time  
(Hour : Minutes)  
To set an alarm time  
To configure the countdown timer  
1. While the countdown start time is on the display in the  
1. In the Alarm Mode, use D to scroll through the alarm  
screens until the one whose time you want to set is  
displayed.  
Countdown Timer Mode, hold down A until the current  
countdown start time starts to flash, which indicates the  
setting screen.  
If the countdown start time is not displayed, use the  
procedure under “To use the countdown timer” to  
display it.  
2. Press C to move the flashing in the sequence shown  
below to select other settings.  
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To set a one-time alarm, display alarm screen AL1, AL2, AL3 or AL4.  
To set the snooze alarm, display the SNZ screen.  
The snooze alarm repeats every five minutes.  
2. After you select an alarm, hold down A until the hour setting of the alarm time  
starts to flash, which indicates the setting screen.  
Hours  
Minutes  
This operation turns on the alarm automatically.  
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Operation Guide 3179  
3. When the setting you want to change is flashing, use D and B to change it as  
This watch uses a 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 rechargeable battery to charge fully, contact your dealer or  
CASIO distributor about having it replaced.  
described below.  
Setting  
Screen  
Button Operation  
Hours, Minutes  
Use D (+) and B (–) to change the setting.  
Never try to remove or replace the watch’s rechargeable battery yourself. Use of the  
wrong type of battery can damage the watch.  
To specify a countdown start time of 24 hours, set  
4. Press A to exit the setting screen.  
.
All data stored in memory is deleted, and the current time and all other settings  
return to their initial factory defaults whenever battery power drops to Level 5 and  
when you have the battery replaced.  
To use the countdown timer  
Press D while in the Countdown Timer Mode to start the  
countdown timer.  
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.  
The countdown timer operation continues even if you  
exit the Countdown Timer Mode.  
Press D while a countdown operation is in progress to  
pause it. Press D again to resume the countdown.  
To stop a countdown operation completely, first pause it  
(by pressing D), and then press B. This returns the  
countdown time to its starting value.  
Battery Power Indicator and Recover Indicator  
The battery power indicator on the display shows you the current status of the  
rechargeable battery’s power.  
Current timer  
time  
Level  
Battery Power Indicator  
Function Status  
Battery power  
indicator  
Timer start time  
1
All functions enabled.  
2
3
All functions enabled.  
Illumination  
This watch has an EL (electro-luminescent) panel that  
causes the entire display to glow 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  
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Auto and manual receive,  
illumination, and beeper  
disabled.  
ll  
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l
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(Charge Soon Alert)  
4
5
Except for timekeeping and  
the CHG (charge) indicator,  
all functions and display  
indicators disabled.  
All functions disabled.  
To illuminate the display manually  
In any mode, press L to turn on illumination.  
The above operation turns on illumination regardless of  
the current auto light switch setting.  
The flashing LOW indicator at Level 3 tells you that battery power is very low, and  
that exposure to bright light for charging is required as soon as possible.  
At Level 5, all functions are disabled and settings return to their initial factory  
defaults. Once the battery reaches Level 2 after falling to Level 5, reconfigure the  
current time, date, and other settings.  
The watch’s Home City code setting will change automatically to TYO (Tokyo)  
whenever the battery drops to Level 5. 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.  
You can use the procedure below to select either 1.5 seconds or 3 seconds as the  
illumination duration. When you press L, the illumination will remain on for about  
1.5 seconds or 3 seconds, depending on the current illumination duration setting.  
To specify the illumination duration  
1. In the Timekeeping Mode, hold down A until the  
display contents start to flash. This is the setting screen.  
2. Press C 10 times until the current illumination duration  
Display indicators reappear as soon as the battery is charged from Level 5 to Level 2.  
setting (  
or  
) appears.  
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.  
3. Press D to toggle the setting between  
(approximately 1.5 seconds) and  
3 seconds).  
4. Press A to exit the setting screen.  
(approximately  
Performing illumination, or beeper operations during a  
Recover indicator  
short period may cause  
display.  
(recover) to appear on the  
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  
EL Light,” so the auto light switch operates only when available light is below a certain  
level. It does not turn on the backlight under bright light.  
After some time, battery power will recover and  
(recover) will disappear, indicating that the above  
functions are enabled again.  
l l  
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If  
(recover) appears frequently, it probably means  
that remaining battery power is low. Leave the watch in  
bright light to allow it to charge.  
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.  
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.  
Parallel to  
ground  
More than 40°  
Warning!  
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.  
Warning!  
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.  
On the dashboard of a car parked in direct sunlight  
Too close to an incandescent lamp  
Under direct sunlight  
Charging Guide  
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.  
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.  
Exposure Level (Brightness)  
Approximate  
Exposure Time  
Outdoor Sunlight (50,000 lux)  
5 minutes  
To turn the auto light switch on and off  
In the Timekeeping Mode, hold down L 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.  
Sunlight Through a Window (10,000 lux)  
Daylight Through a Window on a Cloudy Day (5,000 lux)  
Indoor Fluorescent Lighting (500 lux)  
24 minutes  
48 minutes  
8 hours  
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.  
Power Supply  
RecoveryTimes  
This watch is equipped with a solar cell and a rechargeable 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.  
The table below shows the amount exposure that is required to take the battery from  
one level to the next.  
Exposure Level  
(Brightness)  
Approximate Exposure Time  
Solar cell  
Example: Orient the watch so its face is  
Level 5  
Level 4  
3 hours  
9 hours  
14 hours  
Level 3  
Level 2  
18 hours  
90 hours  
182 hours  
Level 1  
5 hours  
24 hours  
49 hours  
pointing at a light source.  
The illustration shows how to position a  
watch with a resin band.  
Outdoor Sunlight  
(50,000 lux)  
Sunlight Through a  
Window (10,000 lux)  
Daylight Through a  
Window on a Cloudy  
Day (5,000 lux)  
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  
covered only partially.  
Indoor Fluorescent  
Lighting (500 lux)  
155 hours  
- - - - - - - - - - - - - - - -  
Important!  
The above exposure time values are all for reference only. Actual required exposure  
times depend on lighting conditions.  
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.  
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Timekeeping  
Press the B button to toggle the lower display between  
Current Time  
Day of week Month Day  
To change the Daylight Saving Time (summer time) setting  
the day of the week and date, and the currently selected  
World Time city and time (Dual Time).  
Use the Timekeeping Mode to set and view the current  
time and date.  
1. In the Timekeeping Mode, hold down A until the city  
code starts to flash, which indicates the setting screen.  
2. Press C and the DST setting screen appears.  
3. Use D to cycle through the DST settings in the  
sequence shown below.  
Read This BeforeYou 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 Mode city  
codes are displayed in accordance with the time and  
date settings you configure in the Timekeeping Mode.  
Hour : Minutes  
Seconds  
Auto DST (  
AvtA  
)
DST off (  
OFF  
)
DST on ( )  
ON  
DST indicator  
PM indicator  
L
If you change your Home City to one that is within the same transmitter area, the  
current DST setting will be retained. If you change to a city that is outside your  
current transmitter area, DST will be turned off automatically.  
B
B
L
Dual Time  
Transmitter  
Japan  
Covered City Codes  
TPE, SEL, TYO  
China  
HKG, BJS  
City code  
Dual time  
U.S.  
HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT  
Europe (U.K., Germany) LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW  
None All other city codes  
To set the time and date manually  
1. In the Timekeeping Mode hold down A until the city  
code starts to flash, which indicates the setting screen.  
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”.  
4. When the setting you want is selected, press A to exit the setting screen.  
The DST indicator appears to indicate that Daylight Saving Time is turned on.  
l
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.  
3. Press C to move the flashing in the sequence shown below to select the other  
setting.  
12/24-Hour  
Format  
Graphic Area  
Minutes  
Year  
DST  
Seconds  
Hour  
Month  
City Code  
The information shown in the graphic area depends on the current mode.  
Illumination  
Duration  
Button  
Operation Tone  
Power Saving  
Day  
Mode  
Timekeeping Mode  
World Time Mode  
Alarm Mode  
Graphic Area  
Graphic Area  
Timekeeping Mode seconds  
Timekeeping Mode seconds  
No indication  
The following steps explain how to configure timekeeping settings only.  
4. When the timekeeping setting you want to change is flashing, use D or B to  
change it as described below.  
Stopwatch Mode  
CountdownTimer Mode  
Stopwatch Mode 1/10 seconds  
CountdownTimer Mode seconds  
Screen:  
To do this:  
Change the city code  
Do this:  
Use D (east) and B  
(west).  
Cycle between Auto DST (AvtA), Daylight Press D.  
Saving Time (ON) and Standard Time  
(OFF).  
Button Operation Tone  
The button operation tone sounds any time you press one  
of the watch’s buttons.You can turn the button operation  
tone on or off as desired.  
Even if you turn off the button operation tone, alarms,  
the Hourly Time Signal, and other beepers all operate  
normally.  
Mute indicator  
Toggle between 12-hour (  
hour ( ) timekeeping  
) and 24- Press D.  
Reset the seconds to  
Press D.  
Change the hour and minutes  
Change the year, month, or day  
Use D (+) and B (–).  
Use D (+) and B (–).  
To turn the button operation tone on and off  
1. In the Timekeeping Mode, hold down A until the city  
code starts to flash, which indicates the setting screen.  
2. Press C nine times until the current button operation  
tone setting (  
3. Press D to toggle the setting between  
and (tone off).  
4. Press A to exit the setting screen.  
Toggle the button operation tone between Press D.  
(on) and (off)  
Toggle the illumination duration between  
(approximately 1.5 seconds) and  
(approximately 3 seconds).  
/
or  
) appears.  
(tone on)  
Press D.  
The mute indicator is displayed in all modes when the  
button operation tone is turned off.  
Toggle between Power Saving on (  
off (  
) and Press D.  
)
Power Saving Function  
5. Press A to exit the setting screen.  
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.  
Auto DST (AvtA) 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,  
NYC, YHZ, or YYT is selected as the Home City code. For more information, see  
“Daylight Saving Time (DST)” below.  
Power saving indicator  
The day of the week is displayed automatically in accordance with the date (year,  
month, and day) settings.  
12-hour and 24-hour timekeeping  
With the 12-hour format, the P (PM) 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 to the left of the  
hour digits for times in the range of midnight to 11:59 a.m.  
With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without  
any indicator.  
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is  
applied in all other modes.  
Elapsed Time  
in Dark  
Display  
Operation  
60 to 70 minutes Blank, with Power Saving All functions enabled, except for the  
indicator flashing display  
Blank, with Power Saving Auto receive, beeper tone,  
indicator not flashing illumination, and display are disabled.  
6 or 7 days  
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.  
Daylight SavingTime (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.  
The time calibration signals transmitted from Mainflingen (Germany), Anthorn  
(England), or 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 (summer time) automatically in accordance with the signals.  
Though the time calibration signal transmitted by the Fukushima and Fukuoka/Saga,  
Japan transmitters include summer time data, summer time currently is not  
implemented in Japan (as of 2008).  
The default DST setting is Auto DST (AvtA) whenever you select LIS, LON, MAD,  
PAR, ROM, BER, STO, ATH, MOW,TYO, ANC,YVR, LAX,YEA, DEN, MEX, CHI,  
NYC,YHZ, or YYT as your Home City code.  
To recover from the sleep state  
Perform any one of the following operations.  
Move the watch to a well-lit area.  
Press any button.  
Angle the watch towards your face for reading.  
To turn Power Saving on and off  
1. In the Timekeeping Mode, hold down A until the city  
l
code starts to flash, which indicates the setting screen.  
2. Press C 11 times until the Power Saving on/off screen  
appears.  
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.  
3. Press D to toggle Power Saving on (  
4. Press A to exit the setting screen.  
) and off (  
).  
l
The Power Saving indicator is on the display in all  
modes while Power Saving is turned on.  
On/Off status  
5
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Operation Guide 3179  
Specifications  
Accuracy at normal temperature: 15 seconds a month  
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)  
Time Calibration Signal Reception: Auto receive 6 times a day (5 times a day for the  
Chinese calibration signal) (Remaining auto receives cancelled as soon as  
one is successful); 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)  
WorldTime: 48 cities (31 time zones)  
Other: Daylight Saving Time/Standard Time  
Alarms: 5 daily alarms (four one-time alarms; one snooze alarm); Hourly Time Signal  
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  
Radio-controlled Atomic Timekeeping Precautions  
Strong electrostatic charge can result in the wrong time being set.  
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 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, DST (summer  
time), and auto receive settings.  
Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)  
Illumination: EL (electro-luminescent panel); Full Auto Light Switch; Selectable  
illumination duration  
The Home City setting reverts to the initial default of TYO (Tokyo) whenever the  
battery power level drops to Level 5 or when you have the rechargeable battery  
replaced. If this happens, change the Home City to the setting you want.  
Other: Button operation tone on/off  
Transmitters  
Power Supply: Solar cell and one rechargeable battery  
Approximate battery operating time: 9 months (from full charge to Level 4) under  
the following conditions:  
The time calibration signal received by this watch depends on the currently selected  
Home City code.  
When a U.S. time zone is selected, the watch receives the time calibration signal  
transmitted from the United States (Fort Collins).  
Watch not exposed to light  
Internal timekeeping  
When a Japanese time zone is selected, the watch receives the time calibration  
signal 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 signals  
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 successfully received. 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 second) per day  
10 seconds of alarm operation per day  
Approximately 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.  
City Code Table  
City  
Code  
UTC Offset/  
GMT Differential  
City  
Code  
UTC Offset/  
GMT Differential  
City  
City  
Auto Return  
If you do not perform any operation for about two or three minutes while a setting  
screen (with a flashing setting) is on the display, the watch will exit the setting screen  
automatically.  
MOW  
JED  
THR  
DXB  
KBL  
KHI  
DEL  
KTM  
DAC  
RGN  
BKK  
SIN  
Moscow  
Jeddah  
Tehran  
Dubai  
Kabul  
Karachi  
Delhi  
Kathmandu  
Dhaka  
Yangon  
Bangkok  
Singapore  
Hong Kong  
Beijing  
Taipei  
Seoul  
Tokyo  
Adelaide  
Guam  
Sydney  
Noumea  
Wellington  
PPG  
HNL  
ANC  
YVR  
LAX  
YEA  
DEN  
MEX  
CHI  
NYC  
SCL  
YHZ  
YYT  
Pago Pago  
Honolulu  
Anchorage  
Vancouver  
Los Angeles  
Edmonton  
Denver  
Mexico City  
Chicago  
New York  
Santiago  
Halifax  
–11  
–10  
–9  
+3  
+3.5  
+4  
+4.5  
+5  
+5.5  
+5.75  
+6  
+6.5  
+7  
Scrolling  
–8  
–7  
The B and D are used in various modes and setting screens to scroll through data  
on the display. In most cases, holding down these buttons during a scroll operation  
scrolls at high speed.  
–6  
–5  
–4  
Initial Screens  
When you enter the World Time Mode or Alarm Mode, the data you were viewing  
when you last exited the mode appears first.  
Timekeeping  
HKG  
BJS  
St. Johns  
–3.5  
–3  
–2  
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.  
+8  
RIO Rio De Janeiro  
FEN Fernando de Noronha  
RAI  
UTC  
LIS  
LON  
MAD  
PAR  
ROM  
BER  
STO  
ATH  
CAI  
TPE  
SEL  
TYO  
ADL  
GUM  
SYD  
NOU  
WLG  
The year can be set in the range of 2000 to 2099.  
Praia  
–1  
+9  
+9.5  
+10  
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 after you have the watch’s battery replaced.  
Lisbon  
London  
Madrid  
Paris  
Rome  
Berlin  
Stockholm  
Athens  
Cairo  
0
+1  
+2  
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.  
+11  
+12  
World Time  
The seconds count of the World Time is synchronized with the seconds count of the  
Timekeeping Mode.  
Illumination Precautions  
The electro-luminescent panel that provides illumination loses power after very long  
JRS  
Jerusalem  
use.  
Illumination may be difficult to see when viewed under direct sunlight.  
The watch may emit an audible sound whenever the display is illuminated. This is  
due to vibration of the EL panel used for illumination, and does not indicate  
malfunction.  
Based on data as of June 2008.  
The rules governing global times (UTC offset and GMT differential) and summer  
time are determined by each individual country.  
Illumination turns off automatically whenever an alarm sounds.  
Frequent use of illumination runs down the battery.  
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.  
More than 15 degrees  
too high  
Illumination may not turn on if the face of the watch is  
more than 15 degrees above or below parallel. Make  
sure that the back of your hand is parallel to the ground.  
Illumination turns off after a preset amount of time (1.5  
or 3 seconds), 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.  
6
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