Armitron 40/8470
Armitron Sport Digital Chronograph Watch 40/8470BLK User Manual
Model: 40/8470BLK
Introduction
Thank you for choosing the Armitron Sport Digital Chronograph Watch, model 40/8470BLK. This manual provides comprehensive instructions to help you understand and utilize all the features of your new timepiece. Please read this manual carefully to ensure proper operation and maintenance.

Image: The Armitron Sport Digital Chronograph Watch 40/8470BLK displayed on a wrist, showing its black resin case and digital display.
Product Features
The Armitron Sport Digital Chronograph Watch 40/8470BLK is designed for active lifestyles, offering a range of practical functions:
- Durable Construction: Black resin case and top ring for enhanced durability.
- Clear Display: LCD display showing time, seconds, day, and date.
- Multiple Functions: Includes chronograph, lap time, alarm, dual time zone, military time (24-hour format), and a backlight with a 3-second delay for visibility in low light.
- Comfortable Strap: Black resin strap with a secure buckle closure.
- Water Resistance: Water resistant up to 100 meters (330 feet).

Image: A close-up view of the Armitron Sport Digital Chronograph Watch face, highlighting the digital display and function buttons.
Setup
Before using your watch, it is important to set the correct time and date.
Setting Time and Date
- Press the MODE button repeatedly until the time setting mode is displayed (usually indicated by flashing digits).
- Use the START/STOP button to adjust the flashing digit (e.g., hours, minutes).
- Press the RESET button to move to the next digit or setting (e.g., from hours to minutes, then to year, month, day).
- Repeat steps 2 and 3 until all desired settings (hours, minutes, AM/PM, year, month, day) are correctly set.
- Press the MODE button to exit the setting mode and return to normal time display.
Setting the Alarm
- Press the MODE button until the alarm time is displayed.
- Press the RESET button to select the hour or minute digits.
- Use the START/STOP button to adjust the flashing digits to your desired alarm time.
- Press the MODE button to confirm and exit.
- To activate/deactivate the alarm, press the START/STOP button while in alarm mode. An alarm icon will appear/disappear on the display.
Setting Dual Time
This feature allows you to track a second time zone.
- Press the MODE button until the dual time display appears.
- Press the RESET button to select the hour or minute digits.
- Use the START/STOP button to adjust the flashing digits to the desired second time zone.
- Press the MODE button to confirm and exit.
Operating Functions
Using the Chronograph (Stopwatch)
- Press the MODE button until the chronograph display (usually 00:00:00) appears.
- Press the START/STOP button to start the chronograph.
- Press the START/STOP button again to pause the chronograph.
- To record a lap time while the chronograph is running, press the RESET button. The lap time will display briefly, and the chronograph will continue running in the background.
- To reset the chronograph to zero, ensure it is paused, then press the RESET button.
Using the Backlight
To illuminate the display in low-light conditions, press the LIGHT button. The backlight will remain active for approximately 3 seconds.
Switching Between 12/24-Hour Format (Military Time)
While in normal time display mode, press the RESET button to toggle between 12-hour (AM/PM) and 24-hour (military time) formats.
Maintenance
Water Resistance
Your Armitron Sport watch is water resistant up to 100 meters (330 feet). This means it is suitable for swimming and snorkeling. However, it is not suitable for scuba diving.
- Do not operate buttons while the watch is submerged in water.
- Avoid exposing the watch to extreme temperature changes (e.g., hot showers followed by cold water).
- After exposure to saltwater, rinse the watch with fresh water and dry thoroughly.

Image: A chart illustrating different levels of water resistance for watches, indicating that 100m (330ft) is suitable for swimming and snorkeling but not scuba diving.
Cleaning Your Watch
To maintain the appearance of your watch, wipe it regularly with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials.
Battery Replacement
The watch uses 1 Lithium-ion battery. When the display becomes dim or functions become erratic, it may be time to replace the battery. It is recommended to have the battery replaced by a qualified watch technician to ensure proper sealing and maintain water resistance.
Troubleshooting
If you encounter issues with your watch, please refer to the following common solutions:
- Blank Display: Check if the battery needs replacement. If recently replaced, ensure it is installed correctly.
- Buttons Not Responding: Ensure the watch is not in a locked mode (if applicable, though this model does not feature a lock). Try pressing buttons firmly. If submerged, ensure it is dry before operating buttons.
- Incorrect Time/Date: Refer to the "Setting Time and Date" section to reset.
- Water Inside Watch: If moisture appears inside the watch, stop using it immediately and seek professional service. This indicates a breach in water resistance.
Specifications
| Feature | Specification |
|---|---|
| Model Number | 40/8470BLK |
| ASIN | B08FCV44ZM |
| Brand | Armitron |
| Item Weight | 100 Grams |
| Case Material | Resin |
| Band Material | Resin |
| Band Color | Black |
| Clasp Type | Buckle |
| Case Diameter | 48 Millimeters |
| Case Thickness | 16 Millimeters |
| Band Width | 20 Millimeters |
| Water Resistance Depth | 100 Meters (330 Feet) |
| Battery Type | 1 Lithium-ion (included) |
| Special Features | Alarm, Chronograph, Dual Time, Backlight, Water Resistant |
Warranty and Support
For information regarding warranty coverage or technical support, please refer to the documentation included with your purchase or visit the official Armitron website. Keep your proof of purchase for warranty claims.

Image: The packaging box for the Armitron Sport watch, which typically contains warranty information and additional documentation.
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