Introduction
This manual provides comprehensive instructions for the operation, maintenance, and troubleshooting of your Armitron Sport Men's Digital Chronograph Resin Strap Watch, model 40-8284LGY. Please read these instructions carefully to ensure proper use and to maximize the lifespan of your timepiece.

Figure 1: Front view of the Armitron Sport Digital Chronograph Watch, showcasing its light grey resin case and strap, with a clear LCD display and prominent function buttons.
Watch Components and Buttons
Familiarize yourself with the watch's buttons and display elements:
- MODE Button: Used to cycle through different modes (Time, Chronograph, Alarm, Dual Time).
- ST/STP Button: Used to start/stop functions in Chronograph mode, and to adjust settings.
- RESET Button: Used to reset functions or to select options during setting.
- EL (Electroluminescent) Button: Activates the backlight for illumination in low-light conditions.

Figure 2: Side profile of the watch, illustrating the ergonomic design and the placement of the control buttons on the watch case.
Setup: Setting Time and Date
- Enter Setting Mode: In normal time display mode, press and hold the MODE button for approximately 3 seconds until the seconds begin to flash. This indicates you are in setting mode.
- Adjust Seconds: Press the RESET button to reset the seconds to zero.
- Navigate Settings: Press the MODE button repeatedly to cycle through the settings in the following order: Seconds → Hour → Minute → Year → Month → Day.
- Adjust Values: While a value is flashing, press the ST/STP button to increase the value. Hold the button to rapidly advance the value.
- 12/24 Hour Format: When setting the hour, pressing the ST/STP button will toggle between 12-hour (with AM/PM indicator) and 24-hour (military time) formats.
- Exit Setting Mode: Once all settings are adjusted, press the MODE button to return to normal time display mode.
Operating Instructions
Chronograph Function
The chronograph measures elapsed time with precision.
- Enter Chronograph Mode: Press the MODE button until "CHRONO" or "STW" (Stopwatch) appears on the display. The display will show "0:00:00".
- Start/Stop: Press the ST/STP button to start the chronograph. Press it again to stop.
- Reset: While the chronograph is stopped, press the RESET button to clear the time to "0:00:00".
- Lap Time (Split Time): While the chronograph is running, press the RESET button to display the lap time. The chronograph continues to run in the background. Press RESET again to return to the running chronograph display.
Alarm Function
Set a daily alarm to alert you at a specific time.
- Enter Alarm Mode: Press the MODE button until "ALARM" or "AL" appears on the display.
- Set Alarm Time: Press and hold the ST/STP button until the alarm hour flashes. Use the RESET button to adjust the hour. Press ST/STP to move to minutes, then use RESET to adjust minutes.
- Activate/Deactivate Alarm: In Alarm mode, press the RESET button to toggle the alarm ON/OFF. An alarm icon will appear on the display when activated.
- Hourly Chime: Some models may have an hourly chime function. In Alarm mode, press the ST/STP button to toggle the hourly chime ON/OFF. A chime icon will appear when activated.
Dual Time Function
Display a second time zone simultaneously.
- Enter Dual Time Mode: Press the MODE button until "DUAL TIME" or "DT" appears on the display.
- Set Dual Time: Press and hold the ST/STP button until the hour flashes. Use the RESET button to adjust the hour. Press ST/STP to move to minutes, then use RESET to adjust minutes.
- Exit Setting: Press the MODE button to save and exit.
Backlight
To illuminate the display in dark conditions, press the EL button. The backlight will remain on for a few seconds.
Maintenance
- Cleaning: Clean your watch regularly with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, as these can damage the resin case and strap.
- Water Resistance: This watch is water resistant to 330 feet (100 meters). It is suitable for showering, swimming, and snorkeling. Do not operate buttons underwater. Avoid exposure to hot water or steam, as this can compromise the water resistance seals.
- Battery Replacement: The watch is powered by a product-specific battery (included). When the display dims or functions become erratic, it may be time for a battery replacement. It is recommended to have the battery replaced by a qualified watch technician to ensure proper sealing and maintain water resistance.
- Storage: When not in use for extended periods, store the watch in a cool, dry place away from direct sunlight and extreme temperatures.

Figure 3: Rear view of the watch, highlighting the stainless steel case back and the durable resin strap with its buckle closure.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low or dead battery. | Replace the battery. |
| Time is incorrect. | Time not set properly or accidental button press. | Refer to "Setup: Setting Time and Date" section to reset the time. |
| Buttons are unresponsive. | Temporary software glitch or water ingress. | Try pressing all buttons firmly. If issue persists, allow the watch to dry completely if exposed to water. If still unresponsive, seek professional service. |
| Water inside the display. | Compromised water resistance seal. | Stop using the watch immediately and take it to a qualified watch repair center. Do not attempt to open the watch yourself. |
Specifications
- Model Number: 40-8284LGY
- Display Type: LCD Digital
- Case Material: Resin
- Strap Material: Resin
- Water Resistance: 330 feet (100 meters)
- Functions: Chronograph, Lap Time, Alarm, Dual Time, Military Time, Backlight, Time, Seconds, Day, Date.
- Battery: 1 Product Specific battery (included)
- Approximate Dimensions: 3.94 x 3.46 x 3.23 inches (Package Dimensions)
- Approximate Weight: 3.84 ounces
Warranty and Support
Armitron watches are manufactured to high standards and undergo rigorous quality control. For information regarding warranty coverage, service, or technical support, please refer to the warranty card included with your purchase or visit the official Armitron website. Keep your proof of purchase for warranty claims.
For further assistance, you may contact Armitron customer service directly. Contact details are typically available on the manufacturer's website or in the product packaging.


