1. Introduction
Thank you for choosing the OUPINKE OPK3186 Automatic Mechanical 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.

Image: The OUPINKE OPK3186 Gold Automatic Mechanical Watch, showcasing its intricate dial and gold-toned finish.
2. Setup
2.1 Initial Winding
Your OUPINKE automatic mechanical watch is powered by the motion of your wrist and does not require a battery. For the first use, or if the watch has stopped due to lack of wear, it needs to be manually wound:
- Ensure the crown is in its fully pushed-in position (Position 0).
- Rotate the crown clockwise 30-40 times. This will generate sufficient kinetic energy to start the watch movement.
- The watch should begin to operate.
2.2 Setting the Time
- Pull the crown out to Position 2 (the outermost position).
- Rotate the crown to set the hour and minute hands to the correct time.
- Once the time is set, push the crown back into Position 0.
2.3 Setting the Date, Day, and Month
The watch features subdials for Year-Month, Date, and Week. Use the designated buttons for adjustment:
- Adjust Month Button: Located on the right side of the watch case, typically above the crown. Press to advance the month.
- Adjust Calendar Button: Located on the right side of the watch case, typically below the crown. Press to advance the date.
- Dark Function Buttons (Left Side):
- Button 1 (Upper left): Adjusts the year.
- Button 2 (Lower left): Adjusts the day of the week.

Image: Diagram illustrating the crown positions and adjustment buttons for setting time, date, day, and month on the OUPINKE OPK3186 watch.
2.4 Bracelet Adjustment
The watch band can be easily adjusted using the provided tool. If the watch band length is insufficient, contact customer support for additional links.
3. Operating Instructions
3.1 Automatic Winding Mechanism
The OUPINKE OPK3186 is an automatic self-winding watch. It relies on the natural motion of your wrist to wind the mainspring. To ensure accurate timekeeping, the watch must be worn for more than 8 hours every day.
3.2 Luminous Function
The watch features luminous hands and markers for visibility in low-light conditions. This is not a self-illuminating feature; the watch needs to absorb sufficient light (e.g., from sunlight or artificial light) for approximately 30-40 seconds to activate the luminescence. The luminescence typically lasts for about 25 minutes after exposure.

Image: The OUPINKE OPK3186 watch displaying its luminous elements in a dark environment.
4. Maintenance
4.1 Water Resistance
The OUPINKE OPK3186 watch is rated for 50 meters (5 ATM) of water resistance. This makes it suitable for daily use, such as hand washing, rain exposure, and swimming. It is not recommended for diving or prolonged submersion in water. Always ensure the crown is fully pushed in before any contact with water.

Image: The OUPINKE OPK3186 watch partially submerged in water, illustrating its 50-meter water resistance capability.
4.2 Cleaning
To clean your watch, gently wipe the case and bracelet with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, as these can damage the watch's finish and sapphire crystal.
4.3 Storage
When not wearing your watch, store it in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, consider using a watch winder to keep the automatic movement running and lubricated.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch has stopped or is running inaccurately. | Insufficient power reserve. Automatic watches require regular movement. | Manually wind the watch by rotating the crown clockwise 30-40 times. Wear the watch for at least 8 hours daily to maintain power. |
| Date/Day/Month not changing correctly. | Incorrect setting or interference with the movement during certain hours. | Adjust the date/day/month using the appropriate buttons. Avoid adjusting between 9 PM and 3 AM, as this can damage the mechanism. |
| Condensation under the crystal. | Temperature changes or compromised water resistance. | If minor, it may dissipate. If persistent or severe, seek professional service immediately to prevent damage. |
6. Specifications
- Model Number: OPK3186
- Movement: Original Imported Precision Mechanical Movement (Automatic Self-Winding)
- Case Material: Tungsten Steel / Stainless Steel
- Band Material: Tungsten Steel / Stainless Steel
- Crystal: High Hardness Sapphire Crystal (Scratch-resistant)
- Water Resistance: 50 Meters (5 ATM)
- Case Diameter: 40 mm
- Case Thickness: 12 mm
- Strap Width: 20 mm
- Strap Circumference: 20 cm
- Weight: 158g
- Clasp Type: Push Button Foldover Clasp With Safety (Butterfly Buckle)
- Features: Year-Month, Date, Week subdials, Hollow Flywheel (Tourbillon-style), Luminous hands/markers, 21 Synthetic Rubies.

Image: A visual representation of the OUPINKE OPK3186 watch alongside its key technical specifications.
7. Warranty and Support
Your OUPINKE OPK3186 watch comes with a 1-year product quality guarantee. Additionally, we offer 30 days of returns. If you encounter any issues or have questions regarding the quality or operation of your watch, please contact our customer service team for assistance. We are committed to providing a satisfactory solution.
For support, please refer to the contact information provided with your purchase or visit the official OUPINKE website.
8. Product Videos
8.1 OUPINKE Gold Automatic Watch Overview
Video: A detailed overview of the OUPINKE Gold Automatic Watch, showcasing its design, features, and how it looks on the wrist. This video highlights the watch's aesthetic appeal and functionality.
8.2 Skeleton Gold Watch Men Automatic - Features Showcase
Video: This video demonstrates various features of the OUPINKE Skeleton Gold Automatic Watch, including its water resistance, luminous display, and the intricate mechanical movement visible through the skeleton design.