1. Product Overview
The HaiQin Pagani Design 1671 V2 Automatic Watch is a sophisticated timepiece featuring a durable stainless steel case and band, a scratch-resistant sapphire crystal dial window, and a reliable NH35 automatic movement. Designed for both style and functionality, it offers 100M water resistance, making it suitable for various activities.

Figure 1: Front view of the HaiQin Pagani Design 1671 V2 Automatic Watch.
Key Features:
- NH35 Automatic Movement: Japan self-winding movement for precise timekeeping without a battery.
- Durable Construction: Stainless steel case and band, with a synthetic sapphire crystal for superior scratch resistance.
- Water Resistance: Rated for 100M (10 BAR), suitable for swimming and diving (avoid hot springs).
- Luminous Dial: Dial markers and hands glow at night for visibility in low light conditions.
- Textured Band: Original stainless steel solid band with a wire drawing process for enhanced texture and durability.
2. Setup
2.1 Initial Winding
As an automatic watch, the Pagani Design 1671 V2 is powered by the movement of your wrist. For the first use, or if the watch has stopped due to inactivity, it is recommended to manually wind the watch. Rotate the crown clockwise approximately 20 laps to initiate power reserve. After this initial winding, regular wear (at least 10 hours a day) will keep the watch wound.
2.2 Setting Time and Date
- Unscrew the Crown: Gently unscrew the crown counter-clockwise until it pops out to the first position.
- Set Date (First Click): Pull the crown out to the first click position. Rotate the crown clockwise or counter-clockwise to adjust the date.
- Set Time (Second Click): Pull the crown out to the second click position. Rotate the crown to set the hour and minute hands. Ensure to set the correct AM/PM by observing the date change as you pass midnight.
- Screw Down the Crown: Once time and date are set, push the crown back in and screw it down clockwise firmly to ensure water resistance.

Figure 2: Close-up view of the watch crown and dial, showing the date window.
3. Operating Instructions
3.1 Automatic Movement Operation
The NH35 automatic movement in your watch is self-winding. This means that the natural motion of your wrist causes a rotor inside the watch to spin, transferring energy to the mainspring. This eliminates the need for a battery. If the watch is worn consistently, it will maintain its power reserve. If worn less than 10 hours a day, occasional manual winding (as described in Setup) may be necessary.

Figure 3: View of the NH35 automatic movement through the exhibition case back.
3.2 Water Resistance
This watch is water resistant to 100 meters (10 BAR). This rating means it is suitable for swimming, showering, and recreational diving. However, it is crucial to ensure the crown is fully screwed down before any water exposure. DO NOT press any buttons or operate the crown underwater. Avoid using the watch in extreme hot or cold temperatures, such as hot springs, as this can compromise the seals and water resistance. Excessive water contact over time can shorten the watch's life.

Figure 4: The watch is designed to withstand water exposure up to 100 meters.
3.3 Luminous Display
The watch features luminous material on its dial markers and hands. After exposure to light, these elements will glow in dark conditions, providing excellent readability. The intensity and duration of the glow depend on the amount and duration of light exposure.

Figure 5: The watch dial and hands glowing in low light conditions.
4. Maintenance
4.1 Cleaning
To maintain the appearance and longevity of your watch, it is highly recommended to clean the strap and case regularly with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, as these can damage the watch's finish or seals.
4.2 Sapphire Crystal Care
The watch features a synthetic sapphire crystal, known for its exceptional hardness and scratch resistance. While highly durable, it is not entirely impervious to damage. Avoid direct impacts and contact with extremely hard or sharp objects to prevent potential chipping or scratching.

Figure 6: The sapphire crystal offers high scratch resistance for the watch face.
4.3 Storage
When not wearing your watch, store it in a cool, dry place away from direct sunlight, extreme temperatures, and strong magnetic fields. The original packaging box is ideal for storage.
5. Troubleshooting
5.1 Watch Stops Running
If your automatic watch stops running, it likely means the power reserve has depleted due to insufficient wrist movement. Manually wind the watch by rotating the crown clockwise approximately 20 times. Wear the watch regularly (at least 10 hours a day) to ensure continuous operation. If the issue persists after proper winding and wear, contact customer support.
5.2 Time Inaccuracy
Automatic mechanical watches, including those with the NH35 movement, may exhibit slight variations in timekeeping accuracy. This is normal for mechanical movements. If the watch is consistently gaining or losing a significant amount of time (e.g., more than +/- 30 seconds per day), it may require regulation by a professional watchmaker. Ensure the watch is fully wound before assessing its accuracy.
5.3 Water Inside the Watch
If you notice condensation or water inside the watch, immediately stop wearing it and seek professional assistance. This indicates a breach in the water resistance, and prolonged exposure to moisture can cause severe damage to the movement. Ensure the crown is always fully screwed down when near water.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | PD1671-P |
| Case Material | Stainless Steel |
| Band Material | Stainless Steel |
| Dial Window Material | Sapphire Crystal |
| Movement | NH35 Automatic (Japanese) |
| Case Diameter | 42mm |
| Dial Thickness | 15mm |
| Band Width | 22mm |
| Band Length | 230mm |
| Weight | 187g |
| Water Resistance | 100M (10 BAR) |

Figure 7: Detailed dimensions of the HaiQin Pagani Design 1671 V2 watch.
7. Warranty and Support
Your HaiQin Pagani Design watch comes with a 2-year warranty from the date of purchase, covering manufacturing defects. We are committed to providing excellent customer service. If you encounter any issues or have questions, please contact our customer service team.
- Customer Service: Available 18 hours online for assistance.
- Returns: Enjoy a 30-day no-reason return policy from the date of receipt.
For warranty claims or support, please refer to the contact information provided in your product packaging or reach out to the seller directly.
8. Official Product Video
Video 1: An official product video showcasing the Pagani Design New Black Bay 58 Automatic Diving Watch for Men, highlighting its features and design. This video provides a dynamic view of the watch from various angles, including close-ups of the dial, case, and bracelet, as well as demonstrations of its luminous properties and water resistance.





