1. Introduction
This manual provides essential information for the proper use, care, and maintenance of your Armitron Men's Day-Date Function Expansion Band Watch, Model 20/4591BKTT. Designed for durability and style, this timepiece features a mineral crystal lens, a black sunray dial with day and date calendar windows, and luminous hands and markers for easy readability. Its two-tone expansion band offers a comfortable fit. Please read this manual thoroughly to ensure optimal performance and longevity of your watch.

Figure 1: Front view of the Armitron Men's Day-Date Function Expansion Band Watch.
2. Setup
2.1 Initial Inspection
Upon receiving your watch, inspect it for any visible damage. The watch comes with a pre-installed battery. The expansion band is designed for a comfortable fit on most wrists without requiring manual adjustment of links.

Figure 2: The Armitron watch worn on a wrist, showcasing the expansion band.
2.2 Setting Time and Date
Your watch features a day and date function. To set the time and date:
- Pull the Crown: Gently pull the crown (the small knob on the side of the watch case) out to the first or second position. Refer to the diagram below for crown positions.
- Setting the Date: If the crown is in the first position, rotate it clockwise or counter-clockwise to adjust the date.
- Setting the Day: If the crown is in the first position, rotate it in the opposite direction to adjust the day. (Note: Some watches may require advancing the time past midnight to change the day).
- Setting the Time: Pull the crown out to the second position. Rotate the crown to move the hour and minute hands to the correct time. Be mindful of AM/PM when setting the day/date.
- Push the Crown Back: Once the time, day, and date are set, push the crown back into its original position to start the watch movement.
Video 1: A 21-second demonstration of the Armitron Men's Day-Date Function Watch, showing its design and features.
3. Operating
3.1 Timekeeping
Your Armitron watch is powered by a Japanese-quartz movement, known for its accuracy and reliability. Once set, the watch will continuously display the current time, day, and date.
3.2 Water Resistance
This watch is water resistant to 50 meters (165 feet). This rating means it is generally suitable for short periods of recreational swimming. It is not suitable for diving or snorkeling. Avoid operating the crown or pushers when the watch is wet to prevent water intrusion.

Figure 3: Water Resistance Chart, detailing appropriate activities for various water resistance ratings. This watch is rated for 50M (165FT).
4. Maintenance
4.1 Cleaning
To maintain the appearance of your watch, wipe the case and band regularly with a soft, dry cloth. For more stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth. Avoid using chemical cleaners, as they may damage the watch's finish.
4.2 Battery Replacement
The watch uses one product-specific battery. When the watch stops running, it indicates the battery needs replacement. It is recommended to have the battery replaced by a qualified watch technician to ensure the water resistance seal is properly maintained.
4.3 Storage
When not in use, store your watch in a cool, dry place, away from direct sunlight and extreme temperatures. The original packaging box can be used for storage.

Figure 4: The Armitron watch is packaged in a durable box, suitable for storage.
5. Troubleshooting
- Watch Not Running: Check if the crown is fully pushed in. If it is, the battery may need replacement.
- Incorrect Time/Date: Refer to Section 2.2 "Setting Time and Date" to re-adjust. Ensure the crown is pushed back in after setting.
- Condensation Under Crystal: This may indicate a breach in the water resistance seal. Avoid further exposure to water and seek professional service immediately.
- Luminous Hands Not Glowing: The luminous material requires exposure to light (natural or artificial) to charge. If they do not glow after sufficient exposure, this is not typically a malfunction but rather a characteristic of the material.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | 20/4591BKTT |
| Movement | Japanese-quartz |
| Case Diameter | 39.5mm |
| Water Resistance | 50m (165ft) |
| Lens Material | Mineral Crystal |
| Band Type | Expansion Band |
| Material | Stainless-steel |
| Battery | 1 Product Specific battery (included) |
7. Warranty and Support
Armitron watches are manufactured with quality and precision. For specific warranty information and support, please refer to the warranty card included with your purchase or visit the official Armitron website. Keep your proof of purchase for any warranty claims.
For further assistance, you may contact Armitron customer service through their official channels. Details are typically provided in the watch packaging or on the manufacturer's website.





