Case 42 mm, Ceramic, black Diamonds. Recognized U-BOAT identity with a gentle touch, it is characterized by a diameter of 42 mm. The dial is decorated with 39 black diamonds patiently set one by one. MOVEMENT: automatic mechanical, personalized to U-BOAT specifications for stem to be positioned at 9 o’clock. Aiguillage adjusted: H4. Frequency: 28,800 vibrations per hour, 4 Hz. 25 jewels. Power reserve: 38 hours FUNCTIONS: hours, minutes, date. CASE: full black ceramic case, shiny finish, Distinctive crown on left side with patented protection device. Diameter: 42 mm. BACK: in ceramic, sealed with 6 external screws. DIAL: three superimposed dials, the first one in mirror. 39 black diamonds - 0.13 ct. set on indexes 12/4/8 (1 mm diameter). Bâton indexes. Perforated hands, shiny finishing. Visible ruby. CRYSTAL: high quality sapphire. WATER RESISTANCE: 50 mt, 5 ATM. STRAP: in black alligator, tongue buckle in ceramic. Handmade and hand finished. Extra strap in rubber. Width: 20/18 mm. Strap: ref. 4795/Z Buckle: ref. 7294