1. Introduction
The XINJIA XJ-801 is a versatile and durable electronic watch designed for outdoor sports and daily use. It features a clear six-digit display with cold light functionality, making it easy to read in various lighting conditions. This manual provides essential information on the watch's features, operation, and maintenance to ensure optimal performance and longevity.

Figure 1: Front view of the XINJIA XJ-801 electronic watch.
2. Product Features
- Time Display: Displays hour, minute, second, day, month, and week.
- Stopwatch Timing: Features a segment timing function for various activities.
- Cold Light Function: Illuminates the display for clear visibility in low light conditions.
- High Time Accuracy: Error rate of approximately 17745 seconds per month.
- Alarm and Hourly Chime: Customizable alarm and an optional hourly chime function.
3. Button Functions
The XINJIA XJ-801 watch features four primary buttons for navigation and function control:
- M (MODE): Used to cycle through different modes (Time, Stopwatch, Alarm).
- S (START): Used to start/stop functions or increment values during setting.
- R (RESET): Used to reset functions or change selection/digit during setting.
- L (LIGHT): Activates the cold light display.

Figure 2: Button layout on the XINJIA XJ-801 watch.
4. Basic Setup
4.1 Setting Time and Date
- From the normal time display mode, press the MODE (M) button repeatedly until the time setting mode is activated (usually indicated by flashing digits).
- Use the RESET (R) button to select the digit or setting you wish to adjust (e.g., hours, minutes, month, day).
- Use the START (S) button to increment the selected value.
- Once all settings are correct, press the MODE (M) button again to exit the setting mode and return to the normal time display.
5. Operating Instructions
5.1 Stopwatch Function
- Press the MODE (M) button until the stopwatch mode is displayed (usually indicated by '00:00:00').
- Press START (S) to begin timing.
- Press START (S) again to pause timing.
- Press RESET (R) to reset the stopwatch to zero.
5.2 Alarm and Hourly Chime
- Press the MODE (M) button until the alarm setting mode is displayed.
- Use RESET (R) to select the hour or minute digit to set the alarm time.
- Use START (S) to adjust the alarm time.
- Press MODE (M) to confirm and exit.
- To toggle the alarm or hourly chime on/off, typically press START (S) or RESET (R) while in the alarm display mode. Refer to the on-screen indicators for confirmation.
5.3 Cold Light Function
To illuminate the display in dark environments, simply press the LIGHT (L) button. The light will remain on for a few seconds.
6. Water Resistance Guidelines
The XINJIA XJ-801 watch is designed with varying degrees of water resistance. Please observe the following guidelines:
- "Water Resistant" (No Meter Rating): Indicates resistance to splashes and rain. Do not immerse the watch in water.
- "30 M Water Resistant (3 BAR)": Suitable for swimming and car washing. Do not operate buttons while the watch is submerged in water.
- "50 M Water Resistant (5 BAR)": Suitable for swimming and pool diving. It is still not recommended to operate buttons while the watch is submerged in water.
7. Maintenance and Care
To ensure the longevity and proper functioning of your XINJIA XJ-801 watch, please follow these care instructions:
- Avoid exposing the watch to extreme temperatures (heat or cold) or strong vibrations.
- Keep the watch away from strong electric fields, static electricity, and high-frequency environments.
- Do not expose the watch to gasoline, detergents, sprays, adhesives, paints, or other chemicals.
- Clean the watch surface with a soft cloth and clean water only. Do not use chemical cleaners.
- The watch contains precision electronic parts. Do not attempt to open the back cover unless you are a qualified professional.

Figure 3: Back view of the XINJIA XJ-801 watch, showing the water resistance marking.
8. Troubleshooting
If you encounter issues with your watch, consider the following general troubleshooting steps:
- Display is blank or dim: Check the battery. The watch uses 2 LR44 batteries. If the display is dim, the battery may be low.
- Incorrect time: Re-set the time and date following the instructions in Section 4.1.
- Buttons unresponsive: Ensure the watch is not in a locked mode (if applicable) or try a soft reset by holding down all buttons for a few seconds (if the model supports it). If issues persist, contact customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | XJ-801 |
| Dimensions | 24 x 4.5 x 1.73 cm |
| Weight | 150 g |
| Batteries | 2 LR44 batteries (included) |
| Manufacturer | Wuhan Prisco |
| Date First Available | 5 April 2021 |
10. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact the retailer from whom you purchased the watch. Keep your proof of purchase for any warranty claims.