Introduction
This manual provides comprehensive instructions for the Armitron Sport Men's Digital Nylon Strap Watch, model 40/8318. Please read this guide carefully to understand the watch's features and functions, ensuring proper use and longevity of your timepiece.
Product Overview
The Armitron Sport 40/8318 is a digital watch designed for active lifestyles. It features a durable black resin case with an olive green top ring, an LCD display, and a comfortable black and olive green nylon strap with a hook and loop closure. Key functions include time, seconds, day, date, alarm, and backlight.

Side view of the Armitron Sport 40/8318 watch, highlighting the control buttons on the side of the case.

Back view of the Armitron Sport 40/8318 watch, showing the nylon strap with its hook and loop closure mechanism.
Setup
Setting Time and Date
- Press the MODE button repeatedly until the time setting mode is displayed. The seconds will likely be flashing.
- Press the RESET button to advance the flashing selection (seconds, hours, minutes, month, date, day).
- Use the START/STOP button to adjust the selected value.
- Once all settings are correct, press the MODE button to confirm and exit the time setting mode.
Setting Alarm
- Press the MODE button until the alarm setting mode is displayed. The alarm hours will likely be flashing.
- Use the START/STOP button to adjust the alarm hour.
- Press the RESET button to move to the alarm minutes.
- Use the START/STOP button to adjust the alarm minutes.
- Press the MODE button to confirm the alarm time.
- From the alarm display, press the RESET button to toggle the alarm ON or OFF. An alarm icon will appear on the display when the alarm is active.
Operating Instructions
Time Display
The main display shows the current time (hours, minutes, seconds), day, and date. This is the default mode after setup.
Using the Backlight
To illuminate the display in low-light conditions, press the LIGHT button. The backlight will remain active for a few seconds.
Alarm Function
When the alarm is set and active, it will sound at the designated time. To silence the alarm, press any button on the watch.
Chronograph (Stopwatch)
- Press the MODE button until the chronograph (stopwatch) mode is displayed. The display will show '00:00:00'.
- Press the START/STOP button to begin timing.
- Press the START/STOP button again to pause timing.
- Press the RESET button to clear the stopwatch to zero.
- Press the MODE button to exit chronograph mode and return to the main time display.
Maintenance
Cleaning
To clean your watch, wipe it with a soft, dry cloth. Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the watch's finish or internal components.
Water Resistance
This watch is water resistant to 165 feet (50 meters). This means it is suitable for short periods of recreational swimming. It is not suitable for diving, snorkeling, or high-impact water sports. Do not operate any buttons while the watch is submerged in water, as this can compromise the water resistance seal.
Battery Replacement
The watch uses one product-specific battery, which is included. When the display becomes dim or functions become erratic, it may be time to replace the battery. Battery replacement should be performed by a qualified watch technician to ensure the water resistance seal is maintained.
Troubleshooting
- Display is blank or dim: The battery may be low or depleted. Consider professional battery replacement.
- Time is incorrect: Re-set the time and date following the instructions in the "Setting Time and Date" section. Ensure the correct 12/24-hour format is selected if applicable.
- Alarm not sounding: Verify that the alarm is activated in the alarm setting mode. An alarm icon should be visible on the display when active.
- Buttons are unresponsive: Ensure the watch is not in a locked mode (if applicable, though not a common feature for this model). If the issue persists, a battery check or professional inspection may be required.
Specifications
| Model Number | 40/8318 |
| Case Material | Black resin with olive green top ring |
| Display Type | LCD Digital |
| Strap Material | Black and olive green nylon with hook and loop closure |
| Water Resistance | 165 feet (50 meters) |
| Functions | Time, Seconds, Day, Date, Alarm, Backlight, Chronograph |
| Battery | 1 Product Specific battery (included) |
| Approximate Item Weight | 4.23 ounces |
Warranty and Support
For detailed warranty information, product registration, or customer support, please visit the official Armitron website or contact their customer service department directly. It is recommended to retain your purchase receipt as proof of purchase for any warranty claims.
Armitron Official Website: www.armitron.com





