Product Overview
This manual provides detailed instructions for the Casio Illuminator W-201-1BV digital watch. Please read this manual carefully to ensure proper use and to fully utilize all features of your watch.
Image: Front view of the Casio Illuminator W-201-1BV digital watch. The display shows the time as 10:58:50, the date as 6-30, and indicates "ALM SIG P" for alarm and hourly signal. Buttons are labeled "ADJUST", "MODE" on the left, and "LIGHT", "12/24H" on the right. The watch face also displays "CASIO", "10 YEAR BATTERY", "W-201", "ALARM CHRONOGRAPH", and "WATER 50M RESIST".
Button Functions
Your watch features four buttons, each with specific functions depending on the current mode.
- ADJUST (Top Left): Used to enter and exit setting modes, and to confirm selections.
- MODE (Bottom Left): Cycles through the watch's various modes (Timekeeping, Stopwatch, Alarm).
- LIGHT (Top Right): Activates the LED backlight for illumination.
- 12/24H (Bottom Right): Used to change values during settings, and to switch between 12-hour and 24-hour time formats in Timekeeping Mode.
Setup and Initial Configuration
Setting the Time and Date
- In Timekeeping Mode, press and hold the ADJUST button until the seconds begin to flash, indicating the setting screen.
- Press the MODE button to cycle through the settings: Seconds → Hour → Minutes → Year → Month → Day.
- Use the 12/24H button to increase the flashing value. Hold it down to change values rapidly.
- Once all settings are correct, press the ADJUST button to exit the setting mode.
12-Hour / 24-Hour Format
In Timekeeping Mode, press the 12/24H button to toggle between 12-hour and 24-hour time formats. The 12-hour format will display a "P" indicator for PM times.
Operating Modes
Timekeeping Mode
This is the default mode, displaying the current time (hours, minutes, seconds), day of the week, and date.
Stopwatch Mode
The stopwatch measures elapsed time with 1/100-second accuracy, up to 23 hours, 59 minutes, 59.99 seconds.
- From Timekeeping Mode, press the MODE button once to enter Stopwatch Mode. The display will show "00'00"00".
- Press the 12/24H button to start the stopwatch.
- Press the 12/24H button again to stop the stopwatch.
- To reset the stopwatch to zero, press the ADJUST button while the stopwatch is stopped.
- To return to Timekeeping Mode, press the MODE button.
Alarm Mode
The watch features a daily alarm and an hourly time signal.
- From Timekeeping Mode, press the MODE button twice to enter Alarm Mode. The display will show the alarm time.
- To set the alarm time, press and hold the ADJUST button until the hour digits flash.
- Press the MODE button to select between hour and minute settings.
- Use the 12/24H button to change the flashing value.
- Press the ADJUST button to exit alarm setting mode.
- To turn the daily alarm ON/OFF, press the 12/24H button in Alarm Mode (without holding ADJUST). An alarm indicator ("ALM") will appear when the alarm is active.
- To turn the hourly time signal ON/OFF, press the ADJUST button in Alarm Mode (without holding ADJUST). An hourly signal indicator ("SIG") will appear when active.
Illuminator (LED Backlight)
Press the LIGHT button to illuminate the display. The LED backlight includes an afterglow feature, keeping the display lit for a few seconds after the button is released.
Maintenance
Water Resistance
The watch is water resistant to 50 meters (5 ATM). This means it is suitable for everyday use and can withstand splashes, rain, and brief immersion in water. It is not recommended for swimming, diving, or prolonged water exposure. Do not operate buttons while the watch is wet or submerged.
Battery Replacement
The watch is powered by a CR2016 lithium metal battery, designed for approximately 10 years of operation. When the display becomes dim or functions become erratic, the battery may need replacement. Battery replacement should be performed by a qualified watch technician to ensure proper sealing and water resistance.
Cleaning
Wipe the watch with a soft, dry cloth. For stubborn dirt, use a soft cloth dampened with water and a mild soap, then wipe dry. Avoid using chemical cleaners or solvents.
Troubleshooting
- Display is blank or dim: The battery may be low or depleted. Refer to the "Battery Replacement" section.
- Buttons are unresponsive: Ensure the watch is not in a frozen state. Try pressing all buttons firmly. If issues persist, a battery replacement might be necessary.
- Time is inaccurate: Re-set the time according to the "Setting the Time and Date" instructions. If inaccuracy persists, the watch may require service.
- Water inside the watch: Immediately cease use and seek professional service. Water intrusion can cause permanent damage.
For further assistance, please contact Casio customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | W-201-1BVCR |
| Battery Type | CR2016 Lithium Metal (included) |
| Battery Life | Approximately 10 years |
| Water Resistance | 50 meters (5 ATM) |
| Display Type | Digital with LED Backlight (Illuminator) and Afterglow |
| Functions | Daily Alarm, Hourly Time Signal, 1/100-Second Stopwatch (Measuring Capacity: 23:59'59.99") |
| Case Material | Resin |
| Band Material | Resin |
| Approximate Dimensions (Package) | 4.25 x 3.5 x 3 inches |
| Approximate Weight (Package) | 4.8 ounces |
Warranty and Support
Manufacturer's Warranty
This Casio product is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase for specific terms, conditions, and duration. Keep your proof of purchase for warranty claims.
Customer Support
For technical assistance, service, or inquiries regarding your Casio Illuminator W-201-1BV watch, please visit the official Casio website or contact their customer service department.
Casio Official Support Website
