- Automatic mechanical, modified and personalized to U-BOAT specifications for stem position at 9 o’clock.
- Frequency: 28,800 vibrations per hour, 4 Hz.
- Power reserve: 38 hours. 25 jewels.
- Hours, minutes, seconds, date.
- In steel with subsequent IPB coating.
- Distinguishing crown on the left, with a patented protective device and helium escape valve, serial number engraved on a steel plate, set on the left hand side of the case.
- Diameter 47 mm.
- Screwed in.
- Three superimposed dials, one in blue color luminova and the other one cut, treated with composed opaque black pigments.
- U-1001 calligraphy in high relief.
- Blue luminova hands.
- High quality sapphire, flat.
- 1001 mt, 100 ATM.
- Hypoallergenic black rubber with plate in steel and subsequent IPB coating, deployante buckle.
- Width: 23/22 mm.
- Fastened to the case with screws.