Introduction
This manual provides comprehensive instructions for the operation and maintenance of your Armitron Sport Unisex Digital Chronograph Silicone Strap Watch, Model 40/8423. This watch features a quartz movement with a digital multifunctional display, designed for durability and everyday use.

Front view of the Armitron Sport Digital Chronograph Watch, showcasing its black and red design with a clear digital display.
Setup
Initial Setup and Time Setting
Your Armitron Sport watch is equipped with a digital display that requires initial time and date setting. While the process is straightforward, it may require careful attention to the instructions. Refer to the included instruction booklet for detailed diagrams and button functions.
General Steps for Time Setting:
- Locate the 'MODE' button (typically on the left side) and the 'ADJ' (Adjust) or 'SET/EL' (Set/Electroluminescent) button (typically on the right side).
- Press the 'MODE' button repeatedly until the time setting mode is activated. Digits on the display, such as hours or minutes, will typically flash.
- Use the 'ADJ' or 'START/PAUSE' button to increment the flashing digit.
- Press 'MODE' again to move to the next setting (e.g., minutes, then date, then year).
- Once all settings are adjusted, press the 'MODE' button one last time to exit the setting mode.
Note: Some users have reported that if you do not make a change to the time, it may not proceed to the date setting. If you only need to change the date, briefly adjust the time (e.g., increment and then decrement it back to the original value) to enable progression to the date setting.

Side view of the watch, highlighting the control buttons used for setting and mode selection.
Operating Instructions
Display Modes and Functions
Your watch offers several functions accessible through the 'MODE' button:
- Time Display: Shows current time (12-hour or 24-hour format), seconds, and day of the week.
- Date Display: Pressing the upper right button (often 'ADJ' or 'START/PAUSE') will momentarily display the current date.
- Chronograph (Stopwatch): Use the 'START/PAUSE' button to begin and pause timing. The 'SET/EL' or 'ADJ' button may be used to reset.
- Lap Time: Available within the chronograph mode for recording split times.
- Alarm: Set a daily alarm. The alarm icon will typically appear on the display when active.
- Military Time (24-hour format): The watch supports both 12-hour and 24-hour time formats. This can be toggled in the time setting mode.
- Backlight: Activate the backlight for visibility in low-light conditions. This function is typically assigned to a specific button (e.g., 'SET/EL'). The backlight has a three-second delay.

The watch comfortably worn on a wrist, demonstrating its size and fit.
Maintenance
Water Resistance and General Care
Your Armitron Sport watch is water resistant to 165 feet (50 meters). This rating indicates suitability for short periods of recreational swimming, but it is not suitable for diving or snorkeling. Avoid pressing buttons while the watch is submerged in water.

A water resistance chart illustrating the capabilities of the watch (50M/165FT rating).
To maintain the appearance and functionality of your watch:
- Clean the watch regularly with a soft, damp cloth.
- Avoid exposing the watch to extreme temperatures or direct sunlight for prolonged periods.
- Do not use chemical cleaners or abrasive materials on the watch.
- The silicone strap is durable but can be damaged by sharp objects.
Troubleshooting
Common Issues and Solutions
| Problem | Solution |
|---|---|
| Difficulty Setting Time/Date: | Ensure you are in the correct setting mode (flashing digits). If only setting the date, briefly adjust the time (e.g., increment and decrement) to allow progression to date settings. Refer to the instruction manual for specific button sequences. |
| Display is Dim/Hard to Read: | The watch features a reverse LCD display. Ensure the backlight is activated in low-light conditions. Battery may be low if dimness persists. |
| Buttons Unresponsive: | Ensure the watch is not in a locked mode. If submerged, buttons should not be pressed. If issue persists, a battery replacement may be needed. |
Specifications
- Movement: Quartz
- Display: Digital Multifunctional (Reverse LCD)
- Case Diameter: 43.5mm
- Water Resistance: 165 feet (50M)
- Strap Material: Silicone
- Functions: Date, Chronograph, Lap Time, Alarm, Military Time, Backlight with three-second delay
- Battery: 1 Lithium Metal battery (included)
- Model Number: 40/8423BRD
Warranty and Support
For detailed warranty information and further support, please refer to the official Armitron website or the full user manual provided with your purchase. A PDF version of the user manual is often available online for download.
Official User Manual (PDF): Download Here
For additional assistance, please visit the Armitron Store on Amazon.





