
Operation Guide 2895
Stopwatch
Battery
•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 C.
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 | Solar cell |
face is pointing at a light source. |
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Important!
• Storing the watch for long periods in an area where there is no light or wearing it in |
To measure times with the stopwatch
Elapsed Time
D | ➤D | ➤D | ➤D | ➤B |
Start | Stop |
| Stop | Clear |
Split Time |
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D | ➤B | ➤B | ➤D | ➤B |
Start | Split | Split release | Stop | Clear |
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Two Finishes |
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D | ➤B | ➤D | ➤B | ➤B |
Start | Split | Stop | Split release | Clear |
| First runner | Second runner | Display time of |
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| finishes. | finishes. | second runner. |
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| Display time of |
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| first runner. |
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Dual Time
Dual time |
| The Dual Time Mode lets you keep track of time in a | ||
| different time zone. | |||
(Hour : Minutes Seconds) | ||||
• The seconds count of the Dual Time is synchronized | ||||
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| with the seconds count of the Timekeeping Mode. | |
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| To set the Dual Time | |
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| 1. Press Cto enter the Dual Time Mode. | |
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| 2. Use A, B, and Dto set the Dual Time Mode time. | |
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| • Each press of D(+) and | |
Mode | Timekeeping | setting in | ||
• Pressing Asets the Dual Time Mode to the same time | ||||
indicator | Mode time | |||
as the Timekeeping Mode. | ||||
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Backlight
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 normally exposed to bright light |
whenever possible. |
• This watch employs a solar cell that converts light into electricity, which charges a |
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 the rechargeable battery replaced. |
• The rechargeable battery should be replaced with a |
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 power 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. |
Battery Power Indicator
The battery power indicator on the display shows you the current status of the rechargeable battery’s power.
Battery power indicator | Level | Battery Power | Function Status | ||||
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| 1 |
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| All functions enabled. |
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| 2 |
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| All functions enabled. |
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| 3 |
| Beeper tone, backlight, | |||
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| display, and buttons are | |||
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| (Charge Soon Alert) | ||||
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| 4 |
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| All functions, including |
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| timekeeping, are disabled. | |
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• | A |
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Auto light switch on indicator
The backlight uses an EL
•The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate.
•See “Backlight Precautions” for other important information about using the backlight.
To turn on the backlight manually
In any mode, press Lto illuminate the display for about one second.
•The above operation turns on the backlight regardless of the current auto light switch setting.
The flashing | indicator at Level 3 tells you that battery power is very low, and |
• 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, date, and all other settings after the battery is |
recharged to Level 2 from Level 4. Though the time appears on the display after the |
battery is charged to Level 3, you will not be able to change the time setting until the |
battery reaches Level 2. |
• Leaving the watch in direct sunlight or some other very strong light source can |
cause the battery power indicator to temporarily show a reading that is higher than |
the actual battery level. The correct battery power indicator should appear after a |
few minutes. |
• If you use the backlight or any of the alarm functions a number of times during a |
short period, RECOVER appears on the display and the following operations |
become disabled until battery power recovers. |
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about one second, 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.
Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes the backlight to turn on.
•Wear the watch on the outside of your wrist.Parallel to | More than |
ground | 40° |
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 surprise or distract others around you.
•When you are wearing the watch, make sure that its auto light switch is turned off before riding on 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.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down Dfor about two 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.
Backlight |
Beeper tone |
After some time, battery power will recover and RECOVER 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 sunlightCharging Guide
After a full charge, timekeeping remains enabled for up to about 11 months.•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.
Exposure Level (Brightness) | Approximate Exposure Time |
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Outdoor Sunlight (50,000 lux) | 5 minutes |
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Sunlight Through a Window (10,000 lux) | 20 minutes |
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Daylight Through a Window on a Cloudy Day | 41 minutes |
(5,000 lux) |
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Indoor Fluorescent Lighting (500 lux) | 7 hours |
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