U-Boat Sommerso 46mm Stainless Steel.
9007 SOMMERSO 46mm Stainless Steel Case, Black Dial.
MOVEMENT: automatic mechanical, personalized to U-BOAT specifications for stem to be positioned Frequency: 28,800 vibrations per hour, 4 Hz. Power reserve: 38 hours. 25 jewels.
FUNCTIONS: date, hours, minutes, seconds, 24h indicator, graduated uni directional bezel, screw down crown. Serial number plate fixed on the side of the case. Diameter 46 mm. BACK: sealed with seven external screws. DIAL: three superimposed dials, the upper one in black with luminous beige hands and markers.
CRYSTAL: sapphire crystal, anti-reflective coating, lent on the date window.
WATER RESISTANCE: 300 mt, 30 ATM.
STRAP: black strap, in rubber with lining in calf with Kodiak water repellent treatment. Stainless steel tongue