automatic mechanical chronograph modified and personalized at U-BOAT specifications for date display and stem position at 9 o’clock. Laser cut rotor as by U-BOAT specifications. Frequency 28,800 vibrations per hour; 4 Hz. Power reserve 48 hours. 25 Jewels.
hours, minutes, seconds, chronograph, date, 24h indicator, crown release lever.
stainless steel AISI 316L, satin hand finish, distinguishing crown on left side, with a patented protective device. Diameter 45 mm. Bezel ring in polished tungsten. Serial number engraved on a small plate fixed on the side of the case.
sealed with seven external screws, U-shaped window with sapphire fumé crystal, showing the movement.
three superimposed layers, black. Arabic numerals, hands and markers beige treated with superluminova.
high quality sapphire, with anti-reflective treatment.
100 mt, 10 ATM
handmade and hand-finished dark brown calf leather. Stainless steel tongue buckle. Width: 20/20 mm. Strap: ref. 7738/Z Buckle: ref. 5466/SCREW