U-Boat Classico 50 Bronzo model 8104 in the naturally aged bronze 50 mm case. Powered by automatic movement modified to U-Boat specification with crown at 9 o`clock position. See through back. Brown dial with visible ruby, superluminova hands, date, and 24-hours hand. Handmade brown leather band. Water resistant to 100 meters.
Movement: Swiss automatic mechanical, personalized to U-BOAT specifications for stem to be positioned at 9 o’clock. Skeletonized rotor as by U-BOAT specifications. Frequency: 28,800 vibrations per hour, 4 Hz. Power reserve: 48 hours. 26 jewels.
Functions: Hours, minutes, seconds, date.
Case: Stainless steel AISI 316L, Bronze colour, distinguishing crown on left side, with a patented protective device. Diameter 50 mm. Serial number engraved on a small platefixed on the side of the case.
Back: Screwed in, fumé glass showing the movement.
Dial: Brown colour with three superimposed layers, black with visible ruby. Hands, numbers and markers treated with superluminova beige.
Crystal: High quality sapphire with anti-reflective treatment.
Water Resistance: 100 mt, 10 ATM
Strap: Laser cut strap handmade from hand-finished calf leather in brown color. Steel tongue buckle. Width: 23/22 mm. Strap: ref. 7710/Z Buckle: ref. 1763/SCREWS