Operation Guide 2895
StopwatchBattery
The stopwatch lets you measure elapsed time, split times,This watch is equipped with a solar cell and a rechargeable battery (secondary
HoursSecondsand two finishes.battery) that is charged by the electrical power produced by the solar cell. The
" The display range of the stopwatch is 99 hours, 59illustration shown below shows how you should position the watch for charging.
minutes, 59.99 seconds.
" The stopwatch continues to run, restarting from zeroExample: Orient the watch so itsSolar cell
after it reaches its limit, until you stop it.face is pointing at a light source.
" The stopwatch measurement operation continues even" Note that charging efficiency
if you exit the Stopwatch Mode.drops when any part of the solar
" Exiting the Stopwatch Mode while a split time is frozencell is blocked by clothing, etc.
ModeMinuteson the display clears the split time and returns to" The illustration shows how to
indicator1/100 secondelapsed time measurement.position a watch with a resin band.
" All of the operations in this section are performed in the
Important!
Stopwatch Mode, which you enter by pressing C.
" Storing the watch for long periods in an area where there is no light or wearing it in
To measure times with the stopwatchsuch a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Be sure that the watch is normally exposed to bright light
Elapsed Timewhenever possible.
D¤D¤D¤D¤B" This watch employs a solar cell that converts light into electricity, which charges a
StartStopRe-startStopClearbuilt-in rechargeable battery. Normally, the rechargeable battery should not need
replacement, but after very long use over a number of years, the rechargeable
Split Timebattery 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
D¤B¤B¤D¤Bdistributor about having the rechargeable battery replaced.
StartSplitSplit releaseStopClear" The rechargeable battery should be replaced with a CASIO-specified CTL1616
(SPL displayed)battery only. Other rechargeable batteries can cause damage to the watch.
Two Finishes" 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 4 and
D¤B¤D¤B¤Bwhen you have the battery replaced.
StartSplitStopSplit releaseClear" Turn on the watchOs Power Saving function and keep it in an area normally exposed
First runnerSecond runnerDisplay time ofto bright light when storing it for long periods. This helps to keep the rechargeable
finishes.finishes.second runner.battery from going dead.
Display time of
first runner.Battery Power Indicator
The battery power indicator on the display shows you the current status of the
rechargeable batteryOs power.
Dual Time
The Dual Time Mode lets you keep track of time in aBattery power indicatorLevelBattery PowerFunction Status
Dual time
(Hour : Minutes Seconds)different time zone.Indicator
" The seconds count of the Dual Time is synchronized
with the seconds count of the Timekeeping Mode.1All functions enabled.
To set the Dual Time
1.Press C to enter the Dual Time Mode.2All functions enabled.
2.Use A, B, and D to set the Dual Time Mode time.
" Each press of D (+) and B (�) changes the time3||||||||Beeper tone, backlight,
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setting in 30-minute increments.||||||display, and buttons are
ModeTimekeepingdisabled.
" Pressing A sets the Dual Time Mode to the same timeindicator Mode time(Charge Soon Alert)
as the Timekeeping Mode.
4All functions, including
timekeeping, are disabled.
Backlight
L-CHARGE
The backlight uses an EL (electro-luminescent) panel that" The flashing indicator at Level 3 tells you that battery power is very low, and
Auto light switchcauses the entire display to glow for easy reading in thethat exposure to bright light for charging is required as soon as possible.
on indicatordark. The watchOs auto light switch automatically turns on" At Level 4, all functions are disabled and settings return to their initial factory
the backlight when you angle the watch towards your face.defaults. Functions are enabled once again after the rechargeable battery is
" The auto light switch must be turned on (indicated bycharged, but you need to set the time, date, and all other settings after the battery is
the auto light switch on indicator) for it to operate.recharged to Level 2 from Level 4. Though the time appears on the display after the
" See OBacklight Precautions� for other importantbattery is charged to Level 3, you will not be able to change the time setting until the
information about using the backlight.battery reaches Level 2.
" Leaving the watch in direct sunlight or some other very strong light source can
To turn on the backlight manuallycause the battery power indicator to temporarily show a reading that is higher than
In any mode, press L to illuminate the display for aboutthe actual battery level. The correct battery power indicator should appear after a
one second.few minutes.
" The above operation turns on the backlight regardless of" If you use the backlight or any of the alarm functions a number of times during a
the current auto light switch setting.short period, RECOVER appears on the display and the following operations
About the Auto Light Switchbecome disabled until battery power recovers.
Backlight
Turning on the auto light switch causes the backlight to turn on for about one second,
Beeper tone
whenever you position your wrist as described below in any mode. Note that this
watch features a OFull Auto EL Light�, so the auto light switch operates only whenAfter some time, battery power will recover and RECOVER will disappear, indicating
that the above functions are enabled again.
available light is below a certain level. It does not turn on the backlight under bright
light.Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
Moving the watch to a position that is parallel to the ground and then tilting it towardsthe watch in the areas described below whenever charging its rechargeable battery.
you more than 40 degrees causes the backlight to turn on.Also note that allowing the watch to become very hot can cause its liquid crystal
" Wear the watch on the outside of your wrist.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
Parallel toMore than
to become quite hot. Take care when handling the watch to avoid burn injury.
ground40°
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
Warning!
""""" Always make sure you are in a safe place whenever you are reading theCharging Guide
display of the watch using the auto light switch. Be especially careful whenAfter a full charge, timekeeping remains enabled for up to about 11 months.
running or engaged in any other activity that can result in accident or injury." The following table shows the amount of time the watch needs to be exposed to light
Also take care that sudden illumination by the auto light switch does noteach day in order to generate enough power for normal daily operations.
surprise or distract others around you.
""""" When you are wearing the watch, make sure that its auto light switch is turnedExposure Level (Brightness)Approximate Exposure Time
off before riding on a bicycle or operating a motorcycle or any other motorOutdoor Sunlight (50,000 lux)5 minutes
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.Sunlight Through a Window (10,000 lux)20 minutes
Daylight Through a Window on a Cloudy Day41 minutes
To turn the auto light switch on and off(5,000 lux)
In the Timekeeping Mode, hold down D for about two seconds to toggle the auto light
switch on (auto light switch on indicator displayed) and off (auto light switch onIndoor Fluorescent Lighting (500 lux)7 hours
indicator not displayed).
" Since these are the specs, we can include all the technical details.
" The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on." Watch is not exposed to light
" Internal timekeeping
" Display on 18 hours per day, sleep state 6 hours per day
" 1 backlight operation (1.5 seconds) per day
" 10 seconds of alarm operation per day
" 1 countdown timer operation per day
" Stable operation is promoted by frequent charging.
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ACEC
CASIO
