1. Introduction
Thank you for choosing the Naviforce NF9178-SBE Men's Classic Analog Watch. This manual provides essential information for the proper setup, operation, and maintenance of your timepiece. Please read it carefully to ensure optimal performance and longevity of your watch.
Product Overview
The Naviforce NF9178-SBE is a stylish and robust analog watch designed for men. It features a precise Japanese quartz movement, a durable zinc alloy case, scratch-resistant glass, and a comfortable stainless steel bracelet. The watch also includes a date display and is water-resistant up to 3 ATM.

Figure 1: Front view of the Naviforce NF9178-SBE watch, showcasing the blue dial and stainless steel bracelet.
2. Setup
2.1 Setting the Time
- Pull the crown (the knob on the side of the watch) out to position 2.
- Turn the crown clockwise or counter-clockwise to adjust the hour and minute hands to the correct time.
- Once the time is set, push the crown back into position 1 (normal operating position).
2.2 Setting the Date
Your watch features a date display. To set the date:
- Pull the crown out to position 1 (first click).
- Turn the crown clockwise to adjust the date. Avoid setting the date between 9 PM and 3 AM, as this may interfere with the automatic date change mechanism.
- Once the date is set, push the crown back into position 0 (fully pushed in).
2.3 Adjusting the Bracelet
The stainless steel bracelet can be adjusted to fit your wrist size. This typically involves removing or adding links. It is recommended to have this procedure performed by a professional watchmaker to avoid damage to the bracelet or clasp.
Figure 2: Illustration of a watch bracelet adjustment tool. Professional adjustment is recommended for optimal fit.
3. Operating
3.1 Luminous Display
The hands and hour markers of your Naviforce NF9178-SBE watch feature a non-radioactive luminous coating. This allows for easy reading of the time in low-light conditions or darkness after exposure to light.

Figure 3: Comparison of the watch dial in normal light and with its luminous display activated in darkness.
4. Maintenance
4.1 Water Resistance (3 ATM)
Your Naviforce NF9178-SBE watch is water-resistant up to 3 ATM (30 meters). This means it is suitable for daily use and can withstand splashes, rain, and brief immersion in water, such as hand washing. It is not suitable for showering, bathing, swimming, snorkeling, or diving.
- Do not operate the crown or pushers while the watch is wet or submerged.
- Ensure the crown is fully pushed in after setting the time/date to maintain water resistance.

Figure 4: Illustration demonstrating the 3 ATM water resistance of the watch, suitable for daily splashes.
4.2 Cleaning
To maintain the appearance of your watch:
- Wipe the case and bracelet with a soft, dry cloth regularly.
- For stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth.
- Avoid using chemical cleaners, solvents, or abrasive materials, as these can damage the watch's finish.
4.3 Battery Replacement
The watch is powered by a quartz movement, which requires a battery. When the watch stops or the second hand begins to skip, it indicates that the battery needs replacement. It is recommended to have the battery replaced by a qualified watch technician to ensure proper sealing and maintain water resistance.
5. Troubleshooting
If you encounter any issues with your watch, please refer to the table below for common problems and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch stops or runs intermittently. | Low battery. | Replace the battery. |
| Date does not change at midnight. | Time is set incorrectly (e.g., AM/PM confusion). | Advance the time by 12 hours. |
| Condensation inside the watch. | Exposure to extreme temperature changes or compromised water resistance. | Seek professional service immediately to prevent damage. |
| Bracelet feels loose or too tight. | Incorrect bracelet sizing. | Have the bracelet adjusted by a professional. |
6. Technical Specifications
| Feature | Detail |
|---|---|
| Model Number | NF9178-SBE |
| Movement | Japanese Quartz (Seiko Instruments AL32) |
| Case Material | Zinc Alloy |
| Glass Material | Scratch and Break Resistant Glass |
| Bracelet Material | Stainless Steel |
| Water Resistance | 3 ATM (30 meters) |
| Luminous Features | Hands and Hour Markers |
| Functions | Time (Hour, Minute, Second), Date Display |
| Shipping Dimensions | 11.2 x 9.3 x 7.6 cm |
| Weight | 270 grams |
| Department | Men |
7. Warranty and Support
7.1 Warranty Information
Naviforce watches are manufactured to high-quality standards. This watch comes with a limited warranty covering manufacturing defects from the date of purchase. The warranty does not cover normal wear and tear, battery life, accidental damage, or damage resulting from improper use or unauthorized repairs. Please retain your proof of purchase for warranty claims.
7.2 Customer Support
For further assistance, technical support, or warranty inquiries, please contact your authorized Naviforce dealer or the customer service department through the official Naviforce website. When contacting support, please have your watch model number (NF9178-SBE) and purchase details available.

Figure 5: The Naviforce watch is presented in a branded packaging box.