Casio AEQ-110W-1BV Analog-Digital Watch Instruction Manual
Model: AEQ-110W-1BV
Brand: Casio
Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your Casio AEQ-110W-1BV Analog-Digital Watch. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece.

Image: Front view of the Casio AEQ-110W-1BV Analog-Digital Watch, showcasing its black resin case, analog hands, and digital display.
Setup
1. Initial Time Setting (Analog and Digital)
Your watch features both analog hands and a digital display. The analog hands are automatically synchronized with the digital time. Ensure the digital time is set correctly first.
- In Timekeeping Mode, press and hold the ADJUST button (top left) until the city code starts to flash.
- Use the SET(+) (top right) and SET(-) (bottom right) buttons to select your Home City code.
- Press the MODE button (bottom left) to cycle through the setting options: DST (Daylight Saving Time), 12/24-hour format, Seconds, Hour, Minute, Year, Month, Day.
- Use SET(+) and SET(-) to adjust each value.
- After setting all values, press ADJUST to exit the setting mode. The analog hands will automatically adjust to match the digital time.
2. World Time Setting
The watch can display the current time in 29 time zones (30 cities).
- From Timekeeping Mode, press the MODE button until "WORLD TIME" appears on the digital display.
- Use the SET(+) and SET(-) buttons to scroll through the city codes and view the current time in that zone.
- To swap your Home City time with the World Time city, press the ADJUST and SET(+) buttons simultaneously.
3. Alarm Setting
The watch features 3 daily alarms and an hourly time signal.
- From Timekeeping Mode, press the MODE button until "ALARM" appears.
- Use SET(+) to cycle through AL1, AL2, AL3, SNZ (Snooze), and SIG (Hourly Time Signal).
- To set an alarm, select AL1, AL2, or AL3, then press and hold ADJUST until the hour digits flash.
- Use SET(+) and SET(-) to adjust the hour and minute. Press MODE to switch between hour and minute settings.
- Press ADJUST to confirm and exit.
- To turn an alarm or hourly signal ON/OFF, select it and press SET(-).
Operating Instructions
1. Mode Navigation
Press the MODE button (bottom left) to cycle through the following modes:
- Timekeeping Mode
- World Time Mode
- Alarm Mode
- Stopwatch Mode
- Countdown Timer Mode
2. Stopwatch Function
The watch features a 1/100-second stopwatch.
- From Timekeeping Mode, press MODE until "STW" (Stopwatch) appears.
- Press SET(+) to start/stop the stopwatch.
- While stopped, press ADJUST to reset to zero.
- To record split times, press ADJUST while the stopwatch is running. Press ADJUST again to release the split and continue timing.
3. Countdown Timer
The countdown timer can be set for up to 24 hours.
- From Timekeeping Mode, press MODE until "TMR" (Timer) appears.
- Press and hold ADJUST until the hour digits flash.
- Use SET(+) and SET(-) to set the desired countdown time. Press MODE to switch between hour and minute settings.
- Press ADJUST to confirm.
- Press SET(+) to start/stop the countdown.
4. LED Light
Press the LIGHT button (top right, usually labeled SET(+) or a dedicated light button) to illuminate the digital display for a few seconds.
5. Water Resistance
This watch is water resistant to 100 meters (10 BAR). It is suitable for swimming and snorkeling. Do not operate buttons while the watch is wet or submerged. Not suitable for diving.
Maintenance
1. Battery Life
The Casio AEQ-110W-1BV is designed with a 10-year battery life (CR2025). When the display becomes dim or functions become erratic, it may be time for battery replacement. It is recommended to have the battery replaced by an authorized service center to ensure water resistance integrity.

Image: Logo indicating a 10-year battery life.
2. Cleaning
Wipe the watch with a soft, dry cloth. For resin bands and cases, use a soft cloth dampened with water and a mild neutral detergent, then rinse thoroughly with water and wipe dry. Avoid using volatile agents like thinner or benzine, as they may damage the resin components.
3. Water Resistance Care
After exposure to saltwater, rinse the watch thoroughly with fresh water and wipe it dry. Do not operate buttons while the watch is submerged or wet to prevent water entry.
Troubleshooting
- Hands do not match digital time: In Timekeeping Mode, press and hold ADJUST until the city code flashes. Press MODE repeatedly until you reach the hand setting adjustment (usually indicated by a flashing 0:00 or similar). Use SET(+) to advance the hands to the correct position. Press ADJUST to exit.
- Digital display is blank or dim: The battery may be low. Replace the battery as soon as possible.
- Buttons are unresponsive: Ensure the watch is not in a setting mode. If the issue persists, the watch may require servicing.
- Incorrect World Time: Verify that your Home City code and DST settings are correct.
Specifications
| Feature | Description |
|---|---|
| Model Number | AEQ-110W-1BV |
| Case Material | Resin |
| Product Dimensions | 9.84 x 1.57 x 0.79 inches |
| Weight | 3.32 ounces |
| Water Resistance | 100 meters (10 BAR) |
| Battery Type | CR2025 (included) |
| Battery Life | Approximately 10 years |
| Functions | Multi Alarms, 1/100-second Stopwatch, Countdown Timer, World Time, LED Light, Tele Memo |
Product Overview Video
Video: An overview of the Casio AEQ-110W-1BV watch, demonstrating its features and design. This video is provided by the merchant.
Warranty and Support
Your Casio watch is covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions. For product support, service, or additional information, please visit the official Casio website or contact their customer service department.
For further assistance, you may visit the Casio Brand Store on Amazon.





