Product Overview
This manual provides instructions for the Armitron Sport Men's 40/8261 Digital Chronograph Strap Watch. This timepiece features a durable black resin case and strap, a reverse LCD display, and multiple functions designed for daily use and active lifestyles.

Image: Front view of the Armitron Sport 40/8261 Digital Chronograph Watch, displaying the time and date on its reverse LCD screen.
Key Features:
- Display: Reverse LCD with time, seconds, day, and date.
- Functions: Chronograph, lap time, alarm, countdown timer, dual time, military time, and backlight with a three-second delay.
- Construction: Black resin case, top ring, and strap with buckle closure.
- Movement: Quartz.
- Water Resistance: 100 meters (330 feet), suitable for swimming and snorkeling.
Initial Setup
Before using your watch, please ensure the battery is active. If the display is blank, the battery may need activation or replacement.
Setting Time and Date:
- Identify Buttons: Locate the mode, set, start/stop, and light buttons on your watch. (Refer to the diagram below for button identification, if available on your specific model).
- Enter Time Setting Mode: Press the MODE button repeatedly until the time setting mode is displayed (usually indicated by flashing digits).
- Adjust Digits: Use the START/STOP button to increase the flashing digit (hours, minutes, seconds). Use the SET button to move to the next digit.
- Set 12/24 Hour Format: In time setting mode, you can typically toggle between 12-hour (AM/PM) and 24-hour (military time) formats using a specific button (often START/STOP or LIGHT when the hour is flashing).
- Set Date: Continue using the SET button to cycle through year, month, and day settings, adjusting each with the START/STOP button.
- Exit Setting Mode: Press the MODE button to return to normal time display.

Image: The Armitron Sport 40/8261 Digital Chronograph Watch worn on a wrist, showing its size and fit.
Operating Modes
Your Armitron Sport watch features several modes accessible via the MODE button.
Chronograph (Stopwatch):
- Press MODE until "CHRONO" or "STW" appears.
- Press START/STOP to begin timing.
- Press START/STOP again to pause.
- Press SET (or LAP) to record lap times while the chronograph is running.
- Press SET (or RESET) while paused to reset the chronograph to zero.
Alarm:
- Press MODE until "ALARM" or "AL" appears.
- Press SET to select the hour or minute digit.
- Use START/STOP to adjust the time.
- Press MODE to save and exit.
- To activate/deactivate the alarm, use the START/STOP button in alarm mode. An alarm icon will indicate activation.
Countdown Timer:
- Press MODE until "TIMER" or "TMR" appears.
- Press SET to select the hour, minute, or second digit.
- Use START/STOP to adjust the time.
- Press MODE to save.
- Press START/STOP to begin or pause the countdown.
- Press SET to reset the timer.
Dual Time:
- Press MODE until "DUAL TIME" or "DT" appears.
- Press SET to adjust the second time zone's hours and minutes.
- Use START/STOP to change the values.
- Press MODE to save and exit.
Backlight:
Press the LIGHT button to illuminate the display for approximately three seconds.
Care and Maintenance
Cleaning:
Wipe the watch case and strap with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, as these can damage the resin and display.
Water Resistance:
This watch is water-resistant to 100 meters (330 feet). It is suitable for swimming and snorkeling. Do not press buttons underwater, as this can compromise the water resistance. Avoid hot water exposure (e.g., hot showers, saunas) as extreme temperature changes can affect seals.

Image: A water resistance chart illustrating different levels of water resistance for watches, indicating that 100M (330FT) is suitable for swimming and snorkeling.
Battery Replacement:
The watch uses one Lithium Metal battery. When the display dims or functions become erratic, it may be time to replace the battery. It is recommended to have battery replacement performed by a qualified watch technician to ensure proper sealing and maintain water resistance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low or dead battery. | Replace the battery. |
| Time/Date incorrect. | Not set correctly or reset. | Follow "Setting Time and Date" instructions. |
| Buttons are unresponsive. | Watch may be in a locked mode or battery is low. | Check if any mode is active. Replace battery if necessary. Avoid pressing buttons underwater. |
| Water inside the watch. | Water resistance compromised. | Immediately take to a qualified watch technician for inspection and repair. Do not attempt to dry it yourself. |
Specifications
- Model Number: 40/8261BLK
- Case Diameter: 37mm
- Case Material: Resin
- Strap Material: Resin
- Display Type: Digital (Reverse LCD)
- Movement: Quartz
- Water Resistance: 100 meters (330 feet)
- Battery Type: 1 Lithium Metal battery (included)
- Functions: Chronograph, Lap Time, Alarm, Countdown Timer, Dual Time, Military Time, Backlight
Warranty and Support
Armitron watches typically come with a limited warranty covering manufacturing defects. Please refer to the warranty card included with your purchase for specific terms, conditions, and duration. For warranty claims or technical support, please contact Armitron customer service directly.
For further assistance, visit the official Armitron website or contact their customer support department. Keep your purchase receipt as proof of purchase for warranty purposes.
Note: Warranty details may vary by region and retailer.





