Introduction
This manual provides comprehensive instructions for the operation and maintenance of your Casio F108WH Series Digital Watch. Designed for durability and functionality, this watch features an Illuminator LED light, daily alarm, 1/100 second stopwatch, and is water resistant up to 100 meters. Please read this manual carefully to ensure proper use and to maximize the lifespan of your timepiece.
Image: Front view of the Casio F108WH Series Digital Watch in blue, displaying the time and various functions.
Setup
Setting the Time and Date
To set the current time and date on your Casio F108WH watch, follow these steps:
- In the Timekeeping Mode, press and hold the Mode button (bottom left) until the seconds digits begin to flash. This indicates you are in the Time Setting Mode.
- Press the Start/Stop button (top right) to cycle through the selections: Seconds → Hour → Minutes → Month → Day → Day of the Week. The currently selected digits will flash.
- While the seconds digits are flashing, press the Light button (bottom right) to reset the seconds to 00. If the current seconds count is between 30 and 59, 1 is added to the minutes.
- For any other flashing digits (Hour, Minutes, Month, Day, Day of the Week), press the Light button (bottom right) to increase the number. Holding down the button will advance the setting at high speed.
- Once all settings are correct, press the Mode button (bottom left) to exit the Time Setting Mode and return to the Timekeeping Mode. If no button is pressed for a few minutes while in setting mode, the watch will automatically return to Timekeeping Mode.
Image: A detailed diagram illustrating the button functions and sequence for setting the time and date on the watch.
Operating Features
Daily Alarm
The daily alarm can be set to sound at a specific time each day. To set the alarm:
- From the Timekeeping Mode, press the Mode button (bottom left) once to enter the Alarm Mode. The alarm time will be displayed.
- Press the Light button (bottom right) to toggle the alarm ON/OFF.
- To set the alarm time, press and hold the Start/Stop button (top right) until the hour digits flash.
- Use the Light button (bottom right) to adjust the hour. Press the Start/Stop button (top right) to move to the minutes, then use the Light button to adjust.
- Press the Mode button (bottom left) to confirm and exit the Alarm Setting Mode.
1/100 Second Stopwatch
The stopwatch function allows for precise time measurement of elapsed time, split time, and 1st-2nd place times.
- From the Timekeeping Mode, press the Mode button (bottom left) twice to enter the Stopwatch Mode. The display will show 00'00"00.
- Press the Start/Stop button (top right) to start and stop the stopwatch.
- To reset the stopwatch to 00'00"00, ensure it is stopped, then press the Light button (bottom right).
- For split times, press Start/Stop to start, then Light to record a split. Press Light again to release the split and continue timing. Press Start/Stop to stop, then Light to reset.
Illuminator LED Light
The built-in LED light illuminates the display for easy reading in low-light conditions.
- Press the Light button (bottom right) to activate the LED backlight. The light will remain on for a few seconds.
Video: Official Casio brand video showcasing various watch models and their features, including the Illuminator backlight.
Maintenance
Water Resistance
Your Casio F108WH watch is rated for 100M Water Resistance. This means it is suitable for everyday use and can withstand splashes, rain, and even swimming. However, it is not recommended for diving or prolonged submersion at significant depths. Avoid operating buttons while the watch is wet or submerged to prevent water ingress.
Image: The Casio F108WH watch worn on a wrist, highlighting the "WATER RESIST" marking on its face.
Battery Life and Replacement
The watch uses a CR2016 battery with an approximate battery life of 7 years. When the display becomes dim or the functions stop working correctly, it is time to replace the battery. Battery replacement should ideally be performed by a qualified technician to ensure water resistance is maintained.
Cleaning and Care
To keep your watch in optimal condition:
- Wipe the watch case and band with a soft, dry cloth regularly to remove dirt and moisture.
- For resin bands, you can wash them with water and mild soap, then rinse thoroughly and dry completely.
- Avoid exposing the watch to extreme temperatures, direct sunlight for prolonged periods, or strong magnetic fields.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low battery. | Replace the battery (CR2016). |
| Time is incorrect. | Time not set correctly or accidental button press. | Refer to "Setting the Time and Date" section. |
| Alarm does not sound. | Alarm is turned OFF or set incorrectly. | Ensure alarm is ON and time is set correctly in Alarm Mode. |
| Water inside the watch. | Seal compromised or buttons operated underwater. | Immediately take to a qualified watch repair center. Do not attempt to dry it yourself. |
Specifications
- Model Number: F108WH-2ACF
- Brand: Casio
- Dimensions: 1.54 x 0.46 x 1.26 inches; 2.08 ounces
- Water Resistance: 100M (330 feet)
- Battery: 1 x CR2016 (included)
- Approx. Battery Life: 7 years
- Accuracy: +/-30 seconds per month
- Features: LED Light, Daily Alarm, Hourly Time Signal, 1/100 Second Stopwatch (Measuring capacity: 59'59.99", Measuring modes: Elapsed time, split time, 1st-2nd place times), Auto-calendar (set at 28 days for February), 12/24 Hour Formats.
- Material: Resin
Warranty and Support
For detailed warranty information and customer support, please refer to the official Casio website or the user guide provided with your product. A digital version of the user guide is available for download: