Case 46mm. Naturally aged Bronze. Doppiotempo, the latest creation by Italo Fontana, features a bi-directional rotating bezel and an Innovative System to read two different time zones at the same time. Crown release system (patented) at 8 o’clock for easy time and date setting. MOVEMENT: automatic mechanical, personalized to U-BOAT specifications for stem to be positioned at 9 o’clock. Aiguillage adjusted H3. Skeletonized rotor. Frequency: 28,800 vibrations per hour, 4 Hz. Power reserve: 38 hours. 26 jewels. FUNCTIONS: hours, minutes, seconds, date, 24h indicator, bidirectional bezel 24h graduated, crown release lever. CASE: bronze, naturally aged, distinguishing crown on left side, with a patented protective device. Diameter 46 mm. Serial number engraved on a small plate fixed on the side of the case. Bezel lockable with a lever on the right side of the case BACK: sealed with 7 external screws, small window U-shaped with fumé sapphire showing the balance wheel movement. DIAL: three superimposed dials with visible ruby, brown. Arabic numerals, with bronzed brushed frame and superluminova treatment. Bronzed hands, hand brushed and superluminova treated. CRYSTAL: High quality sapphire with anti reflective treatment. WATER RESISTANCE: 100 mt, 10 ATM. STRAP: hand made and hand finished calf leather, tongue buckle in bronze. Width : 22/22 mm. Strap: ref. 7767/Z Buckle: ref. 7790