U-Boat Classico 45 tungsteno CAS 2 7431/A
automatic mechanical chronograph modified and personalized at U-Boat specifications for date display and stem position at 9 o’clock. Frequency 28.800 vibrations per hour; 4 Hz. Power reserve 44 hours. 25 Jewels. Height 7mm.
hours, minutes, chronograph, counter small seconds at 3, counter 12 at 12, counter minutes at 6. Date window at 9 o’clock.
stainless steel 316L AISI, satin hand finish, distinguishing crown on left side, with a special protective device (protected as a Trade Mark). Diameter 50 and 45 mm. Bezel ring in polished tungsten, Serial number engrabed on a small plate fixed on the side of the case.
see through, sealed with 7 external screws, sapphire glass.
beige or black. Arabic numerals, black or beige hands and markers, treated with superluminova.
high quality sapphire, scratchproof and anti-reflective blue coating.
100 mt, 10 ATM
hand made and hand finished calf dark brown leather, stainless steel plate, deployante buckle. Width 23/22 for 50 mm diameter, and 20/20 for 45 mm diameter.