swiss automatic mechanical, personalized to U-BOAT specifications. Frequency: 28,800 vibrations per hour, 4 Hz. Power reserve: 38 hours. 25 jewels.
date, hours, minutes, seconds, 24h indicator, graduated unidirectional bezel, screw down crown.
stainless steel AISI 316L, satin hand finish, distinguishing crown on the left side, with a patented protective device. Serial number plate fixed on the left side of the case. Diameter 46 mm.
sealed with seven external screws.
three superimposed dials, the upper one in black with luminous blue hands, numbers and markers.
Blue 24h indicator hand. Steel brushed frame around the numbers.
high quality sapphire crystal with anti-reflective treatment, lent on the date window.
300 mt, 30 ATM
ultra-resistant vulcanised rubber, in black color, personalised with the logo of the Maison in relief. Stainless steel tongue buckle. Width: 22/20 mm.
Strap: ref. 8351/Z Buckle: ref. 5466/SCREW