Casio W737HX-1AV Digital Watch User Manual

Introduction

This manual provides detailed instructions for the proper use and care of your Casio W737HX-1AV digital watch. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece. The Casio W737HX-1AV is a robust digital watch featuring a 10-year battery life, 100-meter water resistance, LED illuminator, stopwatch, countdown timer, and multiple alarms, designed for daily wear and active lifestyles.

Figure 1: Front view of the Casio W737HX-1AV Digital Watch. This image displays the watch face with its digital display, showing the time, day, and date, along with the surrounding buttons and black resin strap.

Watch Overview and Button Functions

Familiarize yourself with the watch's buttons and their primary functions. The watch typically features four side buttons and one front-facing button.

• Button A (Top Left): Used for adjusting settings, selecting modes, and scrolling upwards.
• Button B (Top Right): Used for starting/stopping stopwatch, increasing values during setting.
• Button C (Bottom Left): Used for cycling through modes (Timekeeping, Stopwatch, Countdown Timer, Alarm, Dual Time).
• Button D (Bottom Right): Used for resetting stopwatch, decreasing values during setting.
• Light Button (Front Bottom): Activates the LED illuminator for visibility in low light conditions.

Figure 2: Side view of the Casio W737HX-1AV Digital Watch, highlighting the button placements on the left side of the watch case.

Setup

Setting the Time and Date

1. In Timekeeping Mode, press and hold Button A until the seconds begin to flash, indicating the setting screen.
2. Press Button C to cycle through the settings: Seconds → Hour → Minute → Year → Month → Day.
3. Use Button B to increase the flashing value or Button D to decrease it.
4. For the 12/24-hour format, when the hour setting is flashing, press Button B to toggle between 12H and 24H.
5. Once all settings are correct, press Button A to exit the setting screen.

Setting the Daily Alarm

1. From Timekeeping Mode, press Button C repeatedly until you reach the Alarm Mode. The alarm time will be displayed.
2. Press and hold Button A until the alarm hour digits begin to flash.
3. Use Button B to increase the hour or Button D to decrease it.
4. Press Button C to move to the minute setting.
5. Use Button B to increase the minute or Button D to decrease it.
6. Press Button A to confirm the alarm time and exit the setting screen.
7. To turn the alarm on/off, press Button B while in Alarm Mode (without holding Button A). An alarm indicator will appear/disappear on the display.

Operating Modes

The Casio W737HX-1AV features several operational modes accessible via Button C.

Timekeeping Mode

This is the default mode, displaying the current time, day of the week, and date. Press the Light Button to illuminate the display.

Stopwatch Mode (1/100 Second)

1. Press Button C until "STW" or "STOP" appears on the display.
2. Press Button B to start the stopwatch.
3. Press Button B again to stop the stopwatch.
4. Press Button D to reset the stopwatch to zero.
5. To record split times, press Button D while the stopwatch is running. The split time will freeze on the display. Press Button D again to return to the running stopwatch.

Countdown Timer Mode (1/1 Second)

1. Press Button C until "TMR" or "TIMER" appears on the display.
2. Press and hold Button A until the hour digits begin to flash.
3. Use Button B to increase the hour or Button D to decrease it.
4. Press Button C to move to the minute setting, then to the second setting.
5. Use Button B or Button D to adjust the values.
6. Press Button A to confirm the timer setting.
7. Press Button B to start the countdown.
8. Press Button B again to pause the countdown. Press Button B once more to resume.
9. Press Button D to reset the timer to its initial set time.
10. The timer will beep when it reaches zero.

Dual Time Mode

1. Press Button C until "DT" or "DUAL TIME" appears on the display.
2. Press and hold Button A until the hour digits begin to flash.
3. Use Button B to increase the hour or Button D to decrease it.
4. Press Button C to move to the minute setting.
5. Use Button B or Button D to adjust the minutes.
6. Press Button A to confirm the dual time setting.

LED Illuminator

Press the Light Button (front bottom) to illuminate the watch face for approximately 1.5 seconds, providing visibility in dark environments.

Maintenance

Water Resistance (100 Meters)

Your Casio W737HX-1AV watch is water resistant up to 100 meters (10 BAR). This means it is suitable for swimming, showering, and snorkeling. Do not operate buttons while the watch is wet or submerged, as this can compromise the water resistance. Avoid exposing the watch to hot water or steam, which can damage seals.

Battery Life

The watch is equipped with a long-life Lithium Ion battery, providing approximately 10 years of operation under normal use. When the display becomes dim or functions become erratic, it may indicate a low battery. Battery replacement should be performed by a qualified technician to maintain water resistance.

Figure 3: Icon indicating the 10-year battery life feature of the watch, represented by a gold emblem with the number 10 and a battery symbol.

Cleaning and Care

Wipe the watch case and band with a soft, dry cloth to remove dirt and moisture. For stubborn dirt, use a soft cloth dampened with water and a mild neutral detergent, then wipe dry. Avoid using volatile agents like thinner, gasoline, alcohol, or chemical cleaning sprays, as they can damage the resin components.

Troubleshooting

• Display is blank or dim: The battery may be low. Consider replacing the battery. Ensure the watch is not exposed to extreme temperatures.
• Buttons are unresponsive: Ensure the watch is not in a locked mode (if applicable, though this model typically does not have one). If submerged, dry the watch thoroughly before attempting to use buttons. If the issue persists, a reset may be required (consult a service center).
• Time is incorrect: Re-set the time and date following the instructions in the "Setting the Time and Date" section. Ensure the 12/24-hour format is correctly selected.
• Alarm does not sound: Verify that the alarm is turned ON in Alarm Mode. Check the alarm volume setting if available (this model typically has a fixed alarm tone).

Specifications

Warranty and Support

For detailed warranty information regarding your Casio W737HX-1AV watch, please refer to the warranty card included with your purchase or visit the official Casio website. The product warranty information can typically be found here.

For further assistance, technical support, or service inquiries, please contact Casio customer service through their official channels. Always provide your model number (W737HX-1AV) when seeking support.

Product Video Overview