Introduction
Welcome to the user manual for your new Casio F108WH Series Digital Watch. This timepiece is designed for durability and functionality, offering essential features for daily use. Please read this manual thoroughly to understand the operation and maintenance of your watch.
Figure 1: Casio F108WH Digital Watch (Black F108WH-1ACF)
Key Features
- LED Light: Illuminates the digital display for easy reading in low-light conditions.
- Daily Alarm: Set a single alarm to sound at a specific time each day.
- Hourly Time Signal: An optional chime that sounds every hour on the hour.
- 1/100 Second Stopwatch: Precise time measurement with a capacity of 59'59.99".
- Measuring Modes: Includes elapsed time, split time, and 1st-2nd place times.
- Auto-Calendar: Pre-programmed calendar automatically adjusts for different month lengths, including February (set at 28 days).
- 12/24 Hour Formats: Choose between standard 12-hour or military 24-hour time formats.
- Accuracy: Maintains time with an accuracy of +/-30 seconds per month.
- Long Battery Life: Approximately 7 years on a single CR2016 battery.
- 100M Water Resistant: Suitable for swimming and snorkeling, but not for scuba diving.
Figure 2: Watch on wrist demonstrating comfortable fit.
Video 1: Official Casio Brand Video showcasing the durability and design philosophy of Casio watches.
Initial Setup
Upon first use or after a battery change, you may need to set the time and date.
- Entering Time Setting Mode: Press the MODE button repeatedly until the seconds begin to flash. This indicates you are in the time setting mode.
- Setting Seconds: Press the START/STOP button to reset the seconds to 00.
- Adjusting Hours: Press the MODE button once to move to the hour setting. Use the START/STOP button to increase the hour. Note the 'P' indicator for PM in 12-hour format.
- Adjusting Minutes: Press the MODE button again to move to the minute setting. Use the START/STOP button to increase the minutes.
- Setting Date (Month, Day, Day of Week): Continue pressing the MODE button to cycle through month, day, and day of week settings. Use the START/STOP button to adjust each value.
- Exiting Setting Mode: Once all settings are correct, press the LIGHT button to exit the setting mode and return to normal timekeeping.
Operating Instructions
Timekeeping Mode
In the normal timekeeping mode, the watch displays the current time (hours, minutes, seconds), day of the week, and date.
- Toggle 12/24-Hour Format: In timekeeping mode, press the START/STOP button to switch between 12-hour and 24-hour time formats.
- Activate LED Light: Press the LIGHT button to illuminate the display. The light will stay on for a few seconds.
Alarm Mode
The watch features a daily alarm and an hourly time signal.
- Access Alarm Mode: From timekeeping mode, press the MODE button once to enter the Alarm Mode (indicated by 'AL' on the display).
- Set Alarm Time: While in Alarm Mode, press the START/STOP button to adjust the alarm hour. Press MODE to move to minutes, then use START/STOP to adjust.
- Toggle Alarm/Hourly Signal: Press the LIGHT button to toggle the Daily Alarm (AL) and Hourly Time Signal (SIG) on or off. An indicator will appear on the display when active.
- Exit Alarm Mode: Press MODE to return to timekeeping mode.
Stopwatch Mode
Use the stopwatch for elapsed time measurements.
- Access Stopwatch Mode: From timekeeping mode, press the MODE button twice to enter Stopwatch Mode (indicated by 'ST' and 00'00"00).
- Start/Stop: Press the START/STOP button to start and stop the stopwatch.
- Split Time: While the stopwatch is running, press the LIGHT button to record a split time. The stopwatch continues to run in the background. Press LIGHT again to release the split display.
- Reset: With the stopwatch stopped, press the LIGHT button to reset it to 00'00"00.
- Exit Stopwatch Mode: Press MODE to return to timekeeping mode.
Maintenance and Care
- Cleaning: Wipe the watch regularly with a soft, dry cloth to remove dirt and moisture. For resin bands, a mild soap solution and water can be used, followed by thorough rinsing and drying.
- Water Resistance: Your watch is 100M water resistant. This means it is suitable for everyday use, showering, swimming, and snorkeling. Do NOT operate buttons while the watch is wet or submerged. Avoid hot water, as it can damage seals.
- Temperature Extremes: Avoid exposing your watch to extreme temperatures (hot or cold) for prolonged periods, as this can affect accuracy and battery life.
- Battery Replacement: The watch uses a CR2016 battery with an approximate life of 7 years. Battery replacement should ideally be performed by a qualified technician to ensure water resistance is maintained.
- Chemicals: Avoid contact with gasoline, cleaning solvents, aerosol sprays, adhesives, paints, etc. These chemicals can cause discoloration, deterioration, or damage to the resin case and band.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low battery. | Replace the battery (CR2016). Consult a professional for replacement to maintain water resistance. |
| Time is incorrect. | Time not set correctly or accidental button press. | Refer to the "Initial Setup" section to reset the time and date. |
| Alarm does not sound. | Alarm is turned off. | In Alarm Mode, press the LIGHT button to ensure the alarm indicator (bell icon) is displayed. |
| Water inside the watch. | Buttons operated underwater or seals compromised. | Immediately take the watch to an authorized service center. Do not attempt to dry it yourself. |
Specifications
- Product Dimensions: 6 x 6 x 3 inches
- Item Weight: 3.35 ounces
- Case Material: Resin
- Band Material: Resin
- Battery Type: CR2016 (1 Lithium Metal battery included)
- Approx. Battery Life: 7 years
- Water Resistance: 100 Meters (330 Feet)
- Accuracy: ±30 seconds per month
- Manufacturer: Casio
- Country of Origin: China
Figure 3: Watch size guide for reference.
Warranty and Support
Your Casio F108WH Series Digital Watch comes with a standard manufacturer's warranty. For detailed information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official Casio website.
For technical support, service, or inquiries about replacement parts, please contact Casio customer service directly. Contact information can typically be found on the official Casio website or in the product packaging.
