Casio F108whc Manual

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Operation Guide 3224
MA1006-EA
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.
  Note that the product illustrations in this manual are 
 
•
intended for reference only, and so the actual product 
may appear somewhat different than depicted by an 
illustration.
General Guide  Press 
 
• B to change from mode to mode.
 
After you perform an operation in any mode, pressing 
 
• B returns to the Timekeeping 
Mode.
Timekeeping Mode Alarm Mode Stopwatch ModeTime Setting Mode
Press B.
 
The watch returns to the Timekeeping Mode automatically if you do not pe\
rform any 
 
•
button operation for one or two minutes in the Alarm Mode and Time Setti\
ng Mode.
  In any mode, press 
 
• C to illuminate the display.
Timekeeping
Use the Timekeeping Mode to view the current time and 
date.
  Day of the week is displayed as follows.
 
•
SU: Sunday MO: Monday
TU : Tuesday WE: Wednesday
TH : Thursday FR: Friday
SA : Saturday
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press A to switch between the 
12-hour and 24-hour formats.   With the 12-hour format, the 
 
• PM indicator appears 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.
  With the 24-hour format, times are displayed in the range of 0:00 to 23:\
59, with 
 
• 24H 
indicator.
Alarm
When the Daily Alarm is turned on, the alarm sounds for 
20 seconds at the preset time each day. When the Hourly 
Time Signal is turned on, the watch beeps every hour on 
the hour.   All of the operations in this section are performed in the 
 
•
Alarm Mode, which you enter by pressing B.
To set the alarm time  
In the Alarm Mode, press 
1.  C. The hour digits flash 
because they are selected.  
This operation automatically turns on the alarm.
 
•
PM indicator
Day of week
Day
Hour : Minutes Seconds
Alarm on indicator Hourly time signal 
on indicator
Alarm time  
(Hour : Minutes)
Mode indicator
Stopwatch
The Stopwatch Mode lets you measure elapsed time, split 
times, and two finishes. The range of the stopwatch is 
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.Mode indicator
Minutes
1/100 secondSeconds
 
Press 
2.  C to change the selection in the following sequence.
Minutes
Hour
Normal Alarm Mode (No digit flashes)
 
Press 
3.  A to increase the selected digits. Holding down A changes the number at 
high speed.  
The format (12-hour and 24-hour) of the alarm time matches the format \
you select 
 
•
for normal timekeeping.
  When setting the alarm time using the 12-hour format, take care to set t\
he time 
 
•
correctly as morning or afternoon (PM).
 
After you set the alarm time, use 
4.  C to return to the Alarm Mode.
 
If you do not operate any button for one or two minutes while a selectio\
n is flashing, 
 
•
the flashing stops and the watch goes back to the Timekeeping Mode aut\
omatically.
To stop the alarm 
Press any button to stop the alarm after it starts to sound.
To switch the Daily Alarm and Hourly Time Signal on and off
Press A while in the Alarm Mode to change the status of the Daily Alarm and Hou\
rly 
Time Signal in the following sequence.
Both on Both offDaily Alarm only Hourly Time 
Signal only
To test the alarm
Hold down A while in the Alarm Mode to sound the alarm.
To measure times with the stopwatch(a) Elapsed time measurementAAAACStartStopRe-startStopClear
(b) Split time measurement
ACCACStart Split
(SPL displayed)Split release
StopClear
(c) Split time and 1st-2nd place times
ACACCStart Split
First runner 
finishes.
Display time of 
first runner.Stop
Second runner 
finishes.
Split release
Display time of 
second runner.Clear
Time Setting
Use the Time Setting Mode to set the current time and 
date.
To set the time and date
  Use 
1.  B to enter the Time Setting Mode.
 
The second’s digits flash because they are selected.
 
•
 
Press 
2.  C to change the selection in the following 
sequence.
Minutes
Seconds
Month
Hour
DayDay of  
the Week
 
While the second’s digits are selected (flashing), press 
3.  A to reset the seconds to . If you press A while the second’s count is in the range of 30 to 59, the seconds 
are reset to  and 1 is added to the minutes. If the second’s count is in the range\
 of 
00 to 29, the minute’s count is unchanged.
  While any other digits (besides seconds) are selected (flashing), \
press 
4.  A to 
increase the number. While the day of the week is selected, pressing A advances 
to the next day. Holding down A changes the current selection at high speed.
  After you set the time and date, press 
5.  B to return to the Timekeeping Mode.
 
If you do not operate any button for one or two minutes while a selectio\
n is flashing, 
 
•
the flashing stops and the watch goes back to the Timekeeping Mode aut\
omatically.
PM indicator
Day of week
Day
Hour : Minutes Seconds 
						

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Operation Guide 3224
Specifications
Accuracy at normal temperature:  ±30 seconds a month
Timekeeping:   Hour, minutes, seconds, p.m., day, and day of the week 
Time system: Switchable between 12-hour and 24-hour formats
Calendar system: Auto-calendar set at 28 days for February
Alarm: Daily alarm, Hourly time signal
Stopwatch Measuring units: 1/100 seconds
Measuring capacity: 59 minutes, 59.99 seconds
Measuring modes: Elapsed time, split time, and two finishes
Illumination: LED (light-emitting diode)
Battery: One lithium battery Type: CR2016
Battery life: Approx. 7 years •  1 second of illumination operation per day
•   20 seconds of alarm operation per day