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Operation Guide 3309 3345
3
Alarms
You can set three independent Daily Alarms. When an
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.
• The alarm and Hourly Time Signal operate in
accordance with the current digital time.
• The alarm number (AL1 though AL3) indicates an alarm
screen. SIG appears in place of the alarm number when
the Hourly Time Signal screen is shown.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Alarm
number
Alarm time
(Hour : Minutes)
Mode
indicator
On/Off status
Alternate at
two-second
interval
To set an alarm time
1.In the Alarm Mode, press D to select the alarm whose
time you want to set.
AL1 AL2 AL3 SIG
2.Hold down A until the hour setting of the alarm time
starts to flash, which indicates the setting screen.
• This automatically turns on the alarm.
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.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P indicator).
• If you have 24-hour timekeeping selected in the Timekeeping Mode, the alarm
time is also displayed in 24-hour format.
5. Press A to exit the setting screen.
Alarm Operation
The alarm sounds in all modes at the preset time for about 10 seconds, or until you
stop it by pressing any button.
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
To turn an alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, press D to select an alarm or the Hourly Time Signal.
2. When the alarm or the Hourly Time Signal you want to set is selected, press A to
turn it on and off.
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 99 minutes, 59.99
seconds.
• The 1/100-second value appears while the elapsed time
operation is stopped or while a split time is frozen on the
display.
SecondsMinutes
Seconds
1/100
second
More than
one minute
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Split indicator
Split time
(Minutes : Seconds) 1/100 second
Split Time Screen
Elapsed Time Screen
Elapsed time
(Minutes : Seconds)
1/100 second
• The stopwatch continues to run, restarting from zero after it reaches its limit, until
you stop it.
• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split
time and returns to elapsed time measurement.
• The stopwatch measurement operation continues even if you exit the Stopwatch
Mode.
• All of the operations in this section are performed in the Stopwatch Mode, which you
enter by pressing C.
To measure times with the stopwatch
D
Start Stop
Elapsed Time
➤
Re-start Clear
D ➤
Stop
D
➤
D
➤
A
Split Time
D
Start Split
➤
Split release
Clear
A
➤
Stop
A
➤
D ➤
A
Two Finishes
D
Start Split
➤
Stop
Clear
A
➤
Split release
D ➤
A
➤
A
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
Illumination
An LED (light-emitting diode) and a light guide panel
illuminate the digital display for easy reading in the dark.
• See “Illumination Precautions” for other important
information.
To illuminate the display
In any mode, press B to illuminate the display.
• You can specify 1.5 seconds or 2.5 seconds as the
illumination duration. See “To set the current digital time
and date manually” for more information.
Battery
This watch is equipped with a solar cell and a 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.
Example: Orient the watch so its face
is pointing at a light source.
• 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.
• Normally, you should try to keep the
watch outside of your sleeve as much
as possible. Charging is significantly
reduced if the face is only partially
covered.
Solar cell
Important!
• 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. Make sure that the watch is normally exposed to bright light
whenever possible.
• Normally, the rechargeable battery should not need replacement, but after very long
use over a number of years, the rechargeable battery may lose its ability to achieve
a full charge. Should you notice problems with getting the rechargeable battery to a
full charge, contact your dealer or CASIO distributor about having it replaced.
• The rechargeable battery should be replaced with a CASIO-specified CTL1616
battery only. Other rechargeable batteries can cause damage to the watch.
• All data stored in memory is deleted, and the current time and all other settings
return to their initial factory defaults whenever battery level drops to Level 4 and
when you have the battery replaced.
• 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 check the current battery level
In the Timekeeping Mode, press C once to display the battery level indicator.
• The battery level indicator shows the battery level either as HI (Level 1) or MID
(Level 2).
• If the battery level drops below Level 2 (MID), a charge soon alert (Level 3) is
displayed in all modes.
Battery level indicator
or
Function Status
All functions enabled.
All functions enabled.
Auto and manual receive,
alarm, hourly time signal,
illumination, and display are
disabled. Though the hands of
the watch do not move, time
continues to be kept internally.
All functions, including
timekeeping, disabled.
Level
1
2
3
4
Battery Level
Indicator
(Charge Soon Alert)
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• The flashing charge indicator (
C
) 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 4, all functions are disabled and settings return to their initial factory
defaults. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date, after the battery reaches Level 2
from Level 4.
• Leaving the watch in direct sunlight or some other very strong light source can cause
the battery level indicator to temporarily show a reading that is higher than the actual
battery level. The correct battery level indicator should appear after a few minutes.
• If you use the light or alarms a number of times during a
short period, the recover indicator (
R
) appears on the
display and the following operations become disabled
until battery power recovers.
Illumination
Beeper tone
Coordination between digital and analog timekeeping
Time calibration signal reception
Recover indicator
After some time, battery power will recover and the recover indicator will disappear,
indicating that the above functions are enabled again.
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.
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.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight