Casio W 201 Owners Manual

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Operation Guide 2879/2889/3091
MA0702-EA
About This Manual•The operational procedures for Modules 2879, 2889 and 3091 are identical. All of
the illustrations in this manual show Module 2879.
Module 2889
(Light)
Module 2879(Light)
Module 3091
(Light)
•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.
Timekeeping Mode
Alarm Mode
Stopwatch ModeDual Time Mode
Press .
General Guide•Press B to change from mode to mode.
•In any mode, press L to illuminate the display.
Day of week
Seconds
Hour : Minutes PM indicator
Month – Day 
TimekeepingUse the Timekeeping Mode to set and view the current
time and date.
To set the time and date1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press B to move the flashing in the sequence shown
below to select other settings.
Seconds Hour
Minutes
YearMonthDay of week Day
3. When the setting you want to change is flashing, press C to change it as
described below.
To change this settingSecondsHour, Minutes, Year, Month,
Day, Day of week
Perform this button operationPress C to reset to 00.Press C to increase the setting.
Holding down C changes the setting at high speed.
•Pressing C while the seconds are in the range of 30 to 59 resets them to 00 and
adds 1 to the minutes. In the range of 00 to 29, the minutes are unchanged.
4. Press A to exit the setting screen.
•The year can be set in the range of 2000 to 2099.
•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.
To toggle between 12-hour and 24-hour timekeepingIn the Timekeeping Mode, press C to toggle between 12-hour timekeeping 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. 24-hour
format is displayed as 24 on the Module 2879 and 3091 display, and 24H on the
Module 2889 display.
•The P and 24-hour format (24, 24H) indicators are not displayed with the
Timekeeping Mode time on the Alarm Mode and Dual Time Mode screens.
•The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
Alarm time
(Hour : Minutes)   Timekeeping Mode tim
e(Hour : Minutes)  
Mode indicator
AlarmWhen the daily alarm is turned on, the alarm tone sounds
when the alarm time is reached.
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
•All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing B.
Alarm OperationThe alarm tone sounds at the preset time for 10 seconds,
regardless of the mode the watch is in.
Hourly time signal
on indicator 
Alarm on indicator 
To set an alarm time1. In the Alarm Mode, hold down A until the hour setting
starts to flash, which indicates the setting screen.
•This operation automatically turns on the alarm.
2. Press B to move the flashing between the hour and
minutes.
3. While a setting is flashing, use C to increase it.
Holding down C changes the setting at high speed.
•With the 12-hour format, set the time correctly as a.m.
(no indicator) or p.m. (P indicator).
4. Press A to exit the setting screen.
To stop the alarm tone after it starts to soundPress any button.
To turn the Daily Alarm and Hourly Time Signal on and offIn the Alarm Mode, press C to cycle through the on and
off settings as shown below.
Alarm On Indicator/Hourly Time Signal On Indicator
Daily alarm 
only Both off Both on Hourly Time 
Signal only
•The alarm on (ALM) indicator flashes while the alarm is
sounding.
•The alarm on (ALM) indicator and Hourly Time Signal
on (SIG) indicator are displayed in all modes.
To test the alarmIn the Alarm Mode, hold down C to sound the alarm.
Minutes 1/100 second  Mode indicator 
Hours 
Seconds 
StopwatchThe 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.
•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 B.
To measure times with the stopwatch
Elapsed time
Start Stop Re-start Stop Clear
StartSplit
(SPL displayed)Split release Stop Clear
StartSplit Stop Split release Clear Split time
Two Finishes
First runner 
finishes.
Display time of 
first runner.Second runner 
finishes.Display time of 
second runner. 
						

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Operation Guide 2879/2889/3091
Three-second indicator   
Timekeeping Mode time(Hour : Minutes) 
Mode indicator 
Seconds  
Hour : Minutes  
Dual TimeThe Dual Time Mode lets you keep track of time in a different time zone.
•In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.
To set the Dual Time1. Press B to enter the Dual Time Mode.
2. Hold down A until the hour setting starts to flash,
which indicates the setting screen.
3. Press B to move the flashing between the hour and
minutes settings.
4. Press C to increase the setting. Holding down C
changes the setting at high speed.
5. Press A to exit the setting screen.
IlluminationAn LED (light-emitting diode) and light guide panel
illuminate the entire display for easy reading in the dark.
•See “Illumination Precautions” for other important
information.
To illuminate the displayIn any mode, press L to illuminate the display.
•You can specify 1.5 seconds or three seconds as the
illumination duration. See “To specify the illumination
duration” for more information.
To specify the illumination durationIn the Timekeeping Mode, hold down C for about two seconds to toggle the
illumination duration between three seconds ( displayed) and 1.5 seconds
( not displayed).
•Pressing C also toggles between 12-hour and 24-hour timekeeping.
•When the three-second setting is selected, the three-second (
) indicator
remains on the display in all modes.
•To protect against running down the watch’s battery, the watch automatically
switches to the 1.5-second setting about seven hours after the three-second setting
is selected. To continue to use the three-second setting, perform the above
procedure again.
ReferenceThis 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.
Auto return featuresIf you leave a screen with flashing digits for one or two minutes without performing
any operation, the watch automatically saves any settings you have made up to that
point and exits the setting screen.
Illumination Precautions•Illumination may be hard to see when viewed under direct sunlight.
•Illumination automatically turns off whenever an alarm sounds.
•Frequent use of illumination runs down the battery.