1. Introduction
This manual provides detailed instructions for the operation and maintenance of your Casio AEQ120W Series Analog-Digital Watch. Please read this manual thoroughly to ensure proper use and to fully utilize all features of your watch. This timepiece combines analog hands with a digital display, offering a range of functions including World Time, multiple alarms, a stopwatch, and a countdown timer, all powered by a 10-year battery and featuring 100-meter water resistance.
2. Features Overview
- 10-Year Battery: Extended battery life for long-term use.
- 100-Meter Water Resistance: Suitable for swimming and snorkeling, but not scuba diving.
- Analog/Digital Display: Combines traditional analog timekeeping with digital functions.
- World Time: Displays current time in 30 cities (29 time zones).
- Countdown Timer: Measures time backward from a specified start time.
- Multi Alarms: Three independent daily alarms.
- 1/100 Second Stopwatch: Measures elapsed time, split times, and 1st-2nd place times.
- LED Light: Illuminates the digital display for visibility in low light conditions.
3. Component Identification
Familiarize yourself with the various components and buttons of your watch:
Image 3.1: Front view of the Casio AEQ120W-1A watch. The watch face features analog hands, a digital display for time and date, and labels for 'WORLD TIME', 'WR 100M', '3 ALARMS', 'COUNTDOWN TIMER', and '10 YEAR BATTERY'. Buttons are visible on both sides, labeled 'ADJUST', 'MODE', 'SET(-)', and 'SET(+)'
- Button A (ADJUST): Used to enter and exit setting modes, and to reset values.
- Button B (MODE): Cycles through the watch's various modes (Timekeeping, World Time, Stopwatch, Countdown Timer, Alarm).
- Button C (SET(-)): Decreases values during setting, or used for specific mode operations.
- Button D (SET(+)): Increases values during setting, or used for specific mode operations.
- Digital Display: Shows digital time, date, mode indicators, and other information.
- Analog Hands: Indicate the current hour and minute.
Image 3.2: Side profile of the Casio AEQ120W-1A watch, highlighting the four control buttons on the left and right sides of the watch case.
Image 3.3: Rear view of the Casio AEQ120W-1A watch, displaying the stainless steel case back with engraved model information and water resistance rating.
4. Initial Setup
Before using your watch, set the home city, time, and date.
- Entering Time Setting Mode: In the Timekeeping Mode, hold down Button A (ADJUST) for approximately two seconds until the city code starts to flash on the digital display. This indicates you are in the setting mode.
- Setting Your Home City: Use Button C (SET(-)) and Button D (SET(+)) to select your desired home city code. The analog hands will automatically adjust to the selected city's time.
- Configuring Other Settings: Press Button B (MODE) to cycle through the settings in the following order: City Code → DST (Daylight Saving Time) → 12/24-Hour Format → Seconds → Hour → Minute → Year → Month → Day → Analog Hand Adjustment.
- Adjusting Values: While a setting is flashing, use Button C (SET(-)) and Button D (SET(+)) to change the value. For seconds, pressing Button D (SET(+)) will reset them to 00.
- Adjusting Analog Hands (if necessary): If the analog hands do not match the digital time after setting, navigate to the 'Analog Hand Adjustment' setting. Use Button C (SET(-)) and Button D (SET(+)) to align the analog hands with the digital time.
- Exiting Setting Mode: Press Button A (ADJUST) to exit the setting mode. The watch will return to Timekeeping Mode.
5. Operating Modes
Your watch has several modes accessible via Button B (MODE).
5.1. Timekeeping Mode
This is the default mode, displaying the current time and date for your home city. The analog hands show the current time, and the digital display shows the time, day of the week, and date.
5.2. World Time Mode
This mode allows you to view the current time in 29 different time zones (30 cities).
- From Timekeeping Mode, press Button B (MODE) once to enter World Time Mode. The digital display will show a city code.
- Use Button C (SET(-)) and Button D (SET(+)) to scroll through the available city codes.
- To return to Timekeeping Mode, press Button B (MODE) repeatedly until Timekeeping Mode is displayed.
5.3. Stopwatch Mode
The stopwatch measures elapsed time, split times, and two finishes.
- From Timekeeping Mode, press Button B (MODE) twice to enter Stopwatch Mode. The digital display will show '00' for minutes, seconds, and hundredths of a second.
- Press Button D (SET(+)) to start the stopwatch.
- Press Button D (SET(+)) again to stop the stopwatch.
- Press Button A (ADJUST) to reset the stopwatch to all zeros.
- To measure a split time, press Button C (SET(-)) while the stopwatch is running. The split time will be displayed. Press Button C (SET(-)) again to return to elapsed time measurement.
5.4. Countdown Timer Mode
The countdown timer can be set for a period of up to 24 hours.
- From Timekeeping Mode, press Button B (MODE) three times to enter Countdown Timer Mode.
- Hold down Button A (ADJUST) until the hour setting starts to flash.
- Use Button C (SET(-)) and Button D (SET(+)) to set the desired countdown start time (hours, then minutes). Press Button B (MODE) to move between hour and minute settings.
- Press Button A (ADJUST) to exit the setting mode.
- Press Button D (SET(+)) to start the countdown.
- Press Button D (SET(+)) again to pause the countdown. Press it again to resume.
- Press Button A (ADJUST) while the countdown is paused to reset it to its starting value.
5.5. Alarm Mode
The watch features three independent daily alarms and an hourly time signal.
- From Timekeeping Mode, press Button B (MODE) four times to enter Alarm Mode. The digital display will show 'AL1', 'AL2', 'AL3', or 'SIG'.
- Use Button C (SET(-)) or Button D (SET(+)) to select the alarm you wish to set (AL1, AL2, AL3) or the hourly time signal (SIG).
- Hold down Button A (ADJUST) until the hour setting of the selected alarm starts to flash.
- Use Button C (SET(-)) and Button D (SET(+)) to set the desired alarm time (hours, then minutes). Press Button B (MODE) to move between hour and minute settings.
- Press Button A (ADJUST) to exit the setting mode.
- To turn an alarm or the hourly time signal ON/OFF, select it in Alarm Mode and press Button D (SET(+)). An indicator will appear/disappear on the display.
6. Maintenance
6.1. Battery Information
This watch is equipped with a long-life battery designed to last approximately 10 years under normal usage. 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 Casio service center to ensure proper sealing and water resistance.
6.2. Water Resistance
The watch features 100-meter water resistance. This means it is suitable for everyday use, swimming, and snorkeling. It is not suitable for scuba diving. Do not operate buttons while the watch is wet or submerged in water to prevent water ingress.
6.3. Care and Cleaning
- Wipe the watch with a soft, dry cloth to remove dirt and moisture.
- For resin bands, wash with water and mild soap, then dry thoroughly.
- Avoid exposing the watch to extreme temperatures, direct sunlight for prolonged periods, or strong magnetic fields.
- Avoid contact with solvents, gasoline, aerosol sprays, or adhesives, as these can damage the resin components.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Digital display is blank or dim. | Low battery. | Replace the battery at an authorized service center. |
| Analog hands do not match digital time. | Hands are misaligned. | Perform analog hand adjustment as described in Section 4. |
| Buttons are unresponsive. | Watch may be in a frozen state or water ingress. | Try resetting the watch (if applicable, refer to full Casio module manual). If issue persists, contact service. Ensure buttons are not operated underwater. |
| Incorrect time displayed. | Time settings are incorrect or DST is wrong. | Re-adjust time and date settings, including DST, as described in Section 4. |
8. Specifications
- Model Number: AEQ-120W-1AVCF
- Module: (Specific module number not provided in data, typically found on case back)
- Case Dimensions: Approximately 4.37 x 3.31 x 2.91 inches (package dimensions, actual watch dimensions vary)
- Weight: Approximately 5.61 ounces (package weight, actual watch weight varies)
- Water Resistance: 100 meters (10 BAR)
- Battery: 1 Lithium Metal battery (CR2025 or equivalent), approximately 10-year life
- Timekeeping: Analog (Hour, Minute), Digital (Hour, Minute, Second, PM, Month, Day, Day of week)
- Accuracy: ±30 seconds per month (at normal temperature)
- World Time: 30 cities (29 time zones), Daylight Saving Time on/off
- Stopwatch: 1/100-second; Measuring capacity: 23:59'59.99''; Measuring modes: Elapsed time, split time, 1st-2nd place times
- Countdown Timer: Measuring unit: 1 second; Countdown range: 24 hours; Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
- Alarms: 3 independent daily alarms; Hourly time signal
- Illumination: LED light for the digital display
9. 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, including warranty period and coverage details. For technical support, service, or inquiries regarding your watch, please visit the official Casio website or contact an authorized Casio service center in your region. Keep your proof of purchase for warranty claims.
For more information, visit the official Casio Store.
