1. Introduction
This manual provides detailed instructions for the proper use, setup, and maintenance of your NAVIFORCE NF8080 Men's Quartz Chronograph Watch. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece.
Figure 1: NAVIFORCE NF8080 Watch (Green Dial Variant)
2. Product Overview
The NAVIFORCE NF8080 is a multifunctional quartz chronograph watch designed for fashion and casual wear. It features a durable zinc alloy case, hardened mineral glass, and a comfortable fumed silicone strap. Key functions include a chronograph, 24-hour display, date display, and luminous hands for visibility in low light conditions.
2.1. Watch Components
Figure 2: Watch Components and Functions
- Crown: Used to adjust time and date.
- Buttons:
- ST/STP Button: Starts and stops the chronograph.
- Reset Button: Resets the chronograph.
- Sub-dials:
- 24-hour Sub-dial: Displays time in a 24-hour format.
- Chronograph Minute Hand Sub-dial: Measures elapsed minutes during chronograph operation.
- Chronograph Second Hand Sub-dial: Measures elapsed seconds during chronograph operation.
- Date Display: Shows the current date.
- Luminous Hands/Scale: Hands and hour markers glow in the dark after exposure to light.
3. Specifications
Figure 3: Product Dimensions
| Feature | Specification |
|---|---|
| Model Number | NF8080 |
| Movement Type | Quartz Chronograph |
| Display Type | Analog (Numberless dial) |
| Case Material | Zinc Alloy |
| Case Diameter | 41mm |
| Case Thickness | 12mm |
| Dial Window Material | Hardlex (Hardened Mineral Glass) |
| Band Material Type | Silicone (Fumed Silicone Strap) |
| Band Width | 26mm |
| Band Length | 250mm (Total Length) |
| Clasp Type | Pin Buckle |
| Water Resistance Depth | 3Bar (30 meters) |
| Weight | 73g |
| Features | Stop Watch, Shock Resistant, Luminous, Auto Date, Chronograph, Complete Calendar, Water-Resistance, Week Display |
| Battery Included | Yes |
4. Setup Instructions
4.1. Setting the Time
- Pull the crown (middle knob) out to the second click position.
- Turn the crown to set the hour and minute hands to the desired time.
- Push the crown back into the normal position.
4.2. Setting the Date
- Pull the crown out to the first click position.
- Turn the crown clockwise or counter-clockwise (depending on the movement) to set the date.
- Once the correct date is displayed, push the crown back into the normal position.
Note: Avoid setting the date between 9:00 PM and 3:00 AM, as this may interfere with the automatic date change mechanism.
5. Operating Instructions
5.1. Using the Chronograph (Stopwatch)
- Start: Press the ST/STP button (top right button) to start the chronograph. The chronograph second hand and minute hand will begin to move.
- Stop: Press the ST/STP button again to stop the chronograph. The elapsed time will be displayed on the chronograph sub-dials.
- Reset: After stopping the chronograph, press the Reset button (bottom right button) to return all chronograph hands to their zero positions.
5.2. Luminous Display
The watch features luminous hands and hour markers. For optimal glow, expose the watch dial to a bright light source (natural or artificial) for a few minutes. The intensity and duration of the glow will depend on the exposure time and light intensity.
Figure 4: Luminous Hands and Scale
5.3. Water Resistance (3ATM)
This watch is rated 3ATM (30 meters) water resistant. This means it is suitable for daily use, such as hand washing, rain, and splashes. It is NOT suitable for showering, bathing, swimming, diving, or any water-related work.
Figure 5: 3ATM Water Resistance
Important: Do not operate the crown or buttons while the watch is wet or submerged in water.
6. Maintenance
- Cleaning: Wipe the watch case and strap regularly with a soft, dry cloth to remove dust and dirt. For the silicone strap, a mild soap solution and water can be used, followed by thorough rinsing and drying.
- Avoid Chemicals: Do not expose the watch to harsh chemicals, solvents, or detergents, as these can damage the case, strap, or seals.
- Temperature Extremes: Avoid exposing the watch to extreme temperatures (hot or cold) or sudden temperature changes, which can affect the movement and water resistance.
- Magnetic Fields: Keep the watch away from strong magnetic fields, as they can interfere with the quartz movement's accuracy.
- Battery Replacement: When the watch stops or the second hand starts skipping, it indicates a low battery. Have the battery replaced by a qualified watch technician to ensure proper sealing and water resistance.
- Storage: When not in use for extended periods, store the watch in a cool, dry place, away from direct sunlight.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch stops or runs intermittently. | Low battery. | Replace the battery. |
| Time is inaccurate. | Exposure to strong magnetic fields; incorrect time setting. | Demagnetize the watch (by a professional); reset the time correctly. |
| Date does not change automatically. | Date set during restricted hours (9 PM - 3 AM). | Adjust the time past 3 AM, then set the date. |
| Chronograph hands do not reset to zero. | Requires calibration. | Consult a watch technician for calibration. |
| Condensation inside the watch. | Loss of water resistance due to impact or aging seals. | Seek immediate professional service to prevent further damage. |
8. User Tips
- Strap Comfort: The fumed silicone strap is designed for comfort and elasticity. Ensure it's not too tight or too loose for optimal wear.
- Luminous Feature: For best results with the luminous hands, charge them under direct light for a few minutes before entering a dark environment.
- Chronograph Use: Practice using the chronograph buttons to become familiar with starting, stopping, and resetting the timer for precise measurements.
9. Warranty & Support
For any issues not covered in this manual or for professional servicing, please contact NAVIFORCE customer support or an authorized service center.
A detailed user manual in PDF format is available for download: NAVIFORCE NF8080 User Manual (PDF)
9.1. Product Video
Watch the official product video for a visual guide to the watch's features and design:
Video: NAVIFORCE NF8080 Product Showcase
