Wearables / Watches
User Manual for U-BOAT Profondo Automatic Watch
Comprehensive user guide for the U-BOAT Profondo automatic watch. Includes instructions on crown operation, time setting, using the unidirectional bezel, understanding the automatic helium valve, and essential maintenance tips to ensure...
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The U-BOAT Profondo is an automatic mechanical watch. Key operations involve the screw-down crown, which must be managed carefully to maintain water resistance. The watch features a unidirectional bezel for tracking time and an automatic helium valve for pressure compensation.
Watch functions
- A: Screw-down crown: Used for winding and setting the time. Must be screwed down to ensure water resistance.
- B: Hours piece: Indicates the hour.
- C: Minutes piece: Indicates the minutes.
- D: Seconds piece: Indicates the seconds.
- E: Unidirectional bezel: Rotates clockwise to track elapsed time.
- F: Automatic helium valve: Automatically compensates for internal pressure changes.
Instruction for use
Winding and starting the watch:
- Ensure the crown (A) is in Position 1 (Neutral Position).
- Unscrew the crown (A) and turn it clockwise to wind the movement.
Setting the time:
- Pull out the crown (A) to Position 2 (First Click).
- Rotate the crown (A) to set the desired time.
- Press and screw the crown (A) back into Position 1 to secure it.
Helium valve function
The helium valve (F) operates automatically. Its function is to compensate for internal pressure changes within the watch, which is essential for professional diving applications.
Care and maintenance
- Regular checks: Have your watch checked every 3-4 years by an authorized retailer or service center for mechanical maintenance and water resistance testing.
- Strap replacement: Contact an authorized retailer or service center for strap replacement.
- Environmental precautions: Avoid exposure to strong temperature variations, humidity, direct sunlight, and intense magnetic fields.
- Water usage: Ensure the watch is suitable for your intended water activity. Always rinse the watch with fresh water after contact with salt water.
- Inactivity: Automatic watches require manual winding if they have not been worn for a long period.
Contact information
U-BOAT Head OfficeVia Pesciatina 751HGragnano, Capannori - 55010 Lucca - ItalyTel: +39 0583 469288Fax: +39 0583 [email protected]
Practical help
Common problems
Watch has stopped
Automatic watches require manual winding after a long period of inactivity. Unscrew the crown to position 1 and turn it clockwise.
Time is incorrect
Pull the crown out to position 2 (first click) and rotate it to set the correct time, then screw it back to position 1.
Before use
- Ensure the crown is fully screwed down to position 1 to maintain water resistance.
- Check that the bezel rotates clockwise.
- Rinse the watch with fresh water after exposure to salt water.
- Avoid placing the watch near strong magnetic fields.
Specs in practice
- Screw-down crown
- A locking mechanism that must be unscrewed to adjust settings and screwed down to seal the case against water.
- Unidirectional bezel
- A rotating ring that only turns in one direction, typically used by divers to track elapsed time safely.
- Automatic helium valve
- A safety feature that releases helium gas from the watch case during decompression to prevent damage.
Images and diagrams
- Position 1 (Neutral): The crown is screwed down against the case; this is the operating position.
- Position 2 (First Click): The crown is pulled out; used for setting the time.
Model compatibility
- The watch is suitable for use in water, but maintenance of water resistance requires periodic checks every 3-4 years.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.