Introduction
This manual provides comprehensive instructions for the proper use, care, and maintenance of your U-Boat Classico U-47 AS1 Automatic Stainless Steel Black Dial Brown Leather Strap Date Mens Watch, Model 8105. Please read this manual carefully before using your watch to ensure optimal performance and longevity.
Figure 1: U-Boat Classico 8105 Swiss Automatic Watch. This image shows the watch face with its distinctive black dial, large Arabic numerals at 4 and 8, and the U-Boat logo. The brown leather strap and the left-sided crown are also visible.
Product Overview
The U-Boat Classico 8105 is a distinguished Swiss automatic timepiece, featuring a robust 47mm stainless steel case and a deep matte black dial. Its design incorporates three superimposed layers under a scratch-resistant sapphire crystal. The watch is equipped with black and luminescent baton-style hands, indices, and Arabic numerals at the 4 and 8 o'clock positions, all treated with beige Super-LumiNova for enhanced visibility. A unique "U" at the 12 o'clock position serves as a signature hour marker. The watch features a "Destro" (right-handed) configuration with a left-sided screw-down crown, inspired by canteen watches, and a discreet date aperture at the 3 o'clock position. A fixed plate on the left side displays the serial number, and a visible ruby jewel accent is set above the 6 o'clock position. It is fitted with a brown calfskin leather strap and features an exhibition caseback showcasing its Swiss automatic movement.
Figure 2: U-Boat Watch Presentation Box. This image displays the black velvet-lined presentation box in which the U-Boat Classico 8105 watch is typically packaged.
Setup
Unpacking
Carefully remove the watch from its packaging. Inspect the watch for any visible damage. Ensure all protective films are removed from the crystal and case back.
Initial Winding and Setting
As an automatic watch, the U-Boat Classico 8105 is powered by the motion of your wrist. However, for initial setup or after a period of inactivity, manual winding is recommended:
- Unscrew the Crown: The crown is located on the left side of the watch case. Gently unscrew the crown counter-clockwise until it is free from the case.
- Manual Winding (Position 0): In this position (crown fully in, unscrewed), turn the crown clockwise approximately 30-40 times. This will build up a power reserve to start the movement.
- Setting the Date (Position 1): Pull the crown out gently to the first click. Turn the crown clockwise or counter-clockwise to set the date. Avoid setting the date between 9 PM and 3 AM, as this can damage the movement. If the current time falls within this window, set the date to the previous day, then proceed to set the time.
- Setting the Time (Position 2): Pull the crown out further to the second click. The seconds hand will stop. Turn the crown to set the hour and minute hands. To ensure accurate time setting, synchronize with a reliable time source. When setting the time past midnight, observe if the date changes to confirm AM/PM.
- Secure the Crown: Once the time and date are set, push the crown back in fully and screw it clockwise tightly against the case. This ensures the watch's water resistance.
After initial winding, wearing the watch regularly will keep it wound. If the watch is not worn for an extended period, it may stop and require re-winding.
Operating the Watch
Wearing the Watch
Adjust the brown calfskin leather strap to fit comfortably on your wrist. The buckle clasp should be secure but not overly tight, allowing for proper air circulation and preventing discomfort.
Automatic Movement
Your U-Boat Classico 8105 is equipped with a Swiss automatic movement. This means the watch is powered by the natural motion of your arm. As you move, an oscillating weight inside the watch rotates, winding the mainspring. When fully wound, the watch has a power reserve that allows it to continue running for a certain period even when not worn.
Water Resistance
The watch is water-resistant up to 100 meters (330 feet). This makes it suitable for swimming and snorkeling, but it is not recommended for scuba diving. Always ensure the crown is fully screwed down before exposing the watch to water.
- 100m (330ft): Suitable for recreational swimming and snorkeling.
- Caution: Do not operate the crown or pushers (if any) while the watch is wet or submerged.
- Avoid: Hot water, steam, or sudden temperature changes, as these can compromise water resistance.
Maintenance
Cleaning
To maintain the appearance of your watch:
- Wipe the case and sapphire crystal with a soft, lint-free cloth.
- For the leather strap, avoid prolonged exposure to water, direct sunlight, and harsh chemicals. Clean with a damp cloth and allow to air dry.
- If the watch has been exposed to saltwater, rinse it gently with fresh water and dry thoroughly with a soft cloth. Ensure the crown is screwed down before rinsing.
Storage
When not wearing your watch for extended periods, store it in a cool, dry place away from direct sunlight and strong magnetic fields. The original presentation box is ideal for storage.
Service and Inspection
Like all precision mechanical instruments, your U-Boat automatic watch requires periodic servicing to ensure optimal performance and longevity. It is recommended to have your watch inspected and serviced by an authorized U-Boat service center every 3-5 years. This service typically includes cleaning, lubrication, and adjustment of the movement, as well as replacement of seals to maintain water resistance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch stops or runs intermittently. | Insufficient power reserve. | Manually wind the watch by unscrewing the crown and turning it clockwise 30-40 times. Wear the watch regularly to keep it wound. |
| Watch runs too fast or too slow. | Exposure to strong magnetic fields; needs regulation. | Keep the watch away from strong magnets (e.g., speakers, refrigerators, certain electronic devices). If the problem persists, seek professional service for demagnetization and regulation. |
| Date does not change at midnight. | Time is set to AM instead of PM, or date mechanism issue. | Advance the time by 12 hours. If the issue continues, avoid setting the date between 9 PM and 3 AM. If the problem persists, professional service may be required. |
| Condensation under the crystal. | Compromised water resistance; sudden temperature change. | Immediately take the watch to an authorized service center. Do not attempt to dry it yourself, as moisture can damage the movement. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 8105 |
| Movement | Swiss Automatic (28,800 vibrations per hour) |
| Case Material | Stainless Steel |
| Case Diameter | 47mm |
| Dial Color | Black |
| Crystal | Scratch-resistant Sapphire |
| Strap Material | Brown Calfskin Leather |
| Clasp Type | Buckle |
| Water Resistance | 100 meters (330 feet) |
| Features | Date display, Luminescent hands and markers, Exhibition caseback, Left-sided crown |
Warranty Information
U-Boat watches are crafted with precision and high-quality materials. Your U-Boat Classico 8105 watch comes with a manufacturer's warranty covering defects in materials and workmanship under normal use. The specific terms and duration of the warranty may vary by region and purchase date. Please refer to the warranty card included with your watch or visit the official U-Boat website for detailed warranty information and registration procedures.
The warranty typically does not cover:
- Damage resulting from improper handling, lack of care, accidents, or normal wear and tear.
- Damage caused by unauthorized repairs or modifications.
- The leather strap, crystal, or battery (if applicable, though this is an automatic watch).
Always retain your proof of purchase for warranty claims.
Customer Support
For any questions, service requests, or technical assistance regarding your U-Boat Classico 8105 watch, please contact an authorized U-Boat service center or the official U-Boat customer support. Contact information can typically be found on the U-Boat official website or through your authorized retailer.
When contacting support, please have the following information ready:
- Model Number: 8105
- Serial Number (located on the fixed plate on the left side of the case)
- Date of Purchase
- Description of the issue
For more information, visit the official U-Boat website: www.u-boatwatch.com
