Automatic mechanical movement, personalized to U-BOAT specifications for stem to be positioned at 9 o’clock.
Laser cut rotor as by U-BOAT specifications.
Frequency: 28,800 vibrations per hour, 4 Hz. Power reserve: 44 hours. 26 jewels.
FUNCTIONS:
hours, minutes, seconds, date.
Stainless steel AISI 316L case, satin hand finish, distinguishing crown on left side, with a patented protective device.
Diameter 47 mm. Serial number engraved on a small platefixed on the side of the case.
Screw in caseback, fumé glass showing the skeleton balance wheel.
Dial consisting of three superimposed layers, beige with visible ruby.
Arabic numerals. Luminous hands, numbers and markers.
High quality sapphire crystal with anti reflective treatment.
100 M, 10 ATM water resistance
Laser cut strap handmade from hand-finished calf leather and processed according to traditional artisan techniques 
to give the strap a naturally distressed look and feel, brown color. Steel tongue buckle. 
Width: 23/22 mm. 
Strap: ref. 7710/Z    Buckle: ref. 1763