Case 50mm, Stainless Steel.
Bezel realized in the hardest of all metals, Tungsten. Innovative and patented system enabling ease of adjustment for both the date and time.
Movement: Automatic mechanical, personalized to U-BOAT specifications for stem to be positioned at 9 o’clock and laser cut rotor. Frequency: 28,800 vibrations per hour, 4 Hz. Power reserve: 48 hours. 25 jewels.
Functions: Hours, minutes, seconds, date, 24h indicator, crown release lever.
Case: Stainless steel AISI 316L, satin hand finish, distinguishing crown on left side, with a patented protective device. Diameter 50 mm. Bezel ring in polished tungsten. Serial number engraved on a small plate fixed on the side of the case.
Back: Sealed with seven external screws, opening U-shaped sapphire fumé crystal with movement view.
Dial: Black with visible ruby. Arabic numerals, hands and markers luminous beige.
Crystal: High quality sapphire, anti-reflection treatment.
Water Resistance: 100 mt, 10 ATM
Strap: Handmade and hand-finished dark brown calf leather. Stainless steel tongue buckle. Width: 23/22 mm. Strap: ref. 4765/Z Buckle: ref. 1763/SCREWS