Introduction
Thank you for choosing the Armitron Men's 20/5178NVDG Multi-Function Dial Gunmetal Bracelet Watch. This manual provides essential information for the proper setup, operation, and maintenance of your timepiece. Please read these instructions carefully to ensure optimal performance and longevity of your watch.
Safety Information
- Avoid exposing the watch to extreme temperatures (hot or cold) or sudden temperature changes.
- Keep the watch away from strong magnetic fields, as this can affect timekeeping accuracy.
- Do not expose the watch to harsh chemicals, solvents, or detergents, which can damage the case, bracelet, or seals.
- Ensure the crown is pushed in completely after setting to maintain water resistance.
Package Contents
Upon opening your package, please verify that the following items are included:
- Armitron Men's 20/5178NVDG Multi-Function Watch
- Instruction Manual (this document)
- Battery (pre-installed in the watch)

Image: The Armitron watch box, typically black with the brand logo, containing the watch and documentation.
Setup
Setting Time and Date
- Pull out the crown: Gently pull the crown (the knob on the side of the watch) to its outermost position.
- Set the time: Rotate the crown clockwise or counter-clockwise to move the hour and minute hands to the desired time. Pay attention to the 24-hour sub-dial to ensure the correct AM/PM setting for the date change.
- Set the date: If your watch has a quick-set date function, pull the crown out to the first position (halfway) and rotate it to adjust the date. If not, you may need to cycle the time past midnight until the correct date appears.
- Push in the crown: Once the time and date are set, push the crown back in completely to its normal position. This also ensures the watch's water resistance.
Bracelet Adjustment
The gunmetal adjustable link bracelet can be sized to fit your wrist. This process typically involves removing links. For precise adjustment, it is recommended to visit a professional jeweler or watch repair service. The bracelet features a fold-over clasp with safety for secure wearing.

Image: The Armitron watch displayed on a wrist, illustrating its size and fit.
Operating
Your Armitron 20/5178NVDG watch features a multi-function dial with several indicators:
- Main Hands: Indicate hours, minutes, and seconds.
- Second Sub-dial: Displays the running seconds for the main time.
- Minute Sub-dial: Tracks minutes, often used in conjunction with the 24-hour sub-dial for specific functions.
- 24-Hour Sub-dial: Indicates the time in a 24-hour format, useful for distinguishing AM/PM and for tracking a second time zone if applicable.
- Date Calendar Window: Displays the current date.
- Navy Blue Ratchet Bezel: This rotating bezel can be used to mark elapsed time. Rotate the bezel so its zero marker aligns with the minute hand. As time passes, the minute hand will point to the elapsed time on the bezel.

Image: A detailed view of the watch face, highlighting the multi-function sub-dials, date window, and ratchet bezel.
Maintenance
Cleaning Your Watch
To maintain the appearance of your watch, wipe the case and bracelet regularly with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth. Avoid using abrasive cleaners or chemicals.
Water Resistance
This watch is water resistant to 50 meters (165 feet). This rating means it is suitable for short periods of recreational swimming. It is not suitable for diving, snorkeling, or prolonged water immersion. Always ensure the crown is fully pushed in before any contact with water.
Battery Replacement
The watch is powered by a Japanese-quartz movement and requires one product-specific battery (included). When the battery needs replacement, it is highly recommended to take your watch to an authorized service center or a professional jeweler. This ensures proper battery installation and maintenance of the watch's water resistance seals.
Troubleshooting
- Watch not running: Check if the crown is fully pushed in. If the watch still does not run, the battery may need replacement.
- Date not changing at midnight: Ensure the 24-hour sub-dial is correctly set to the AM/PM cycle. If the date changes at noon, you may need to advance the time by 12 hours.
- Inaccurate timekeeping: Exposure to strong magnetic fields can affect accuracy. If the issue persists after moving away from magnetic sources, professional inspection may be required.
Specifications
| Model Number | 20/5178NVDG |
| Movement | Japanese-quartz |
| Case Diameter | 50mm |
| Water Resistance | 50m (165ft) - Suitable for recreational swimming, not diving or snorkeling. |
| Lens Material | Mineral Crystal |
| Bracelet Material | Gunmetal Stainless-steel |
| Dial Features | Grey and navy blue textured dial, second, minute, and 24-hour sub-dials, date calendar window, silver-tone luminous hands and markers. |
| Clasp Type | Fold-over clasp with safety |
| Battery | 1 Product Specific battery (included) |

Image: Front view of the Armitron 20/5178NVDG watch, showcasing its design and features.

Image: A visual guide comparing different watch case sizes, from 14-16mm up to 50-54mm, to help understand the 50mm diameter of this model.
Warranty and Support
Your Armitron watch is covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions. For technical support, service, or warranty claims, please contact Armitron customer service through their official website or the contact information provided in your warranty documentation.





