automatic mechanical, 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: 38 hours. 25 jewels.
hours, minutes, seconds, date.
stainless steel AISI 316L, 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.
screwed in, fumé glass showing the skeleton balance wheel.
three superimposed layers, beige with visible ruby.
Arabic numerals. Luminous hands, numbers and markers.
high quality sapphire with anti reflective treatment.
100 mt, 10 ATM
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