MOVEMENT: automatic mechanical, personalized to U-Boat specifications for stem to be positioned at 9 o’clock. Aiguillage adjusted: H3. Frequency: 28.800 vibrations per hour, 4 Hz. Power reserve: 40 hours. 25 jewels. Height: 4,60 mm.

FUNCTIONS: hours, minutes, seconds, date at 3 o’clock.

CASE: stainless steel 316L AISI, satin hand finish, distinguishing crown on the left side, with a special protective device (protected as a Trade Mark). 53 and 45 mm diameter. Thickness for 53 mm diameter: 15,25 mm; for 45 mm diameter: 14,50 mm. Weight for 53 mm diameter: 150 gr; for 45 mm diameter: 120 gr. 

BACK: see through, sealed with 7 external screws. For the diameter 53 mm version special movement holder with particular holes to reduce the weight. 

DIAL: beige or black with visible ruby. Arabic numerals, black or luminous white hands and markers.

CRYSTAL: high quality sapphire, scratchproof.

WATER RESISTANCE: 100 mt, 10 ATM.

STRAP: hand made and hand finished calf black leather for the beige dial and brown for the black dial, stainless steel plate, 
deployante buckle. Width for 53 mm diameter: 23/22 mm. Width for 45 mm diameter: 20/20 mm.