U-Boat - Sommerso - Men - 2026

U-Boat 9007/A/MT Sommerso Automatic Crown Left, 24-Hour Display

Movement:
Swiss-made, mechanical with automatic winding, built to U-BOAT specifications. Frequency: 28,800 semi-oscillations per hour. Power reserve: 38 hours. 25 jewels (rubies).

Case:
AISI 316L stainless steel, side with company engraving, diameter 46 mm (measured without crown), height ~17 mm, screwed crown with patented protective cap on the left side of the case. The serial number of each watch is located next to the crown on a separately attached plaque, uni-directional rotating bezel, case back screwed down, 300 m (30 atm) water resistance, anti-reflective sapphire crystal.

Dial:
Deep black, Arabic numerals with luminescent material, indices with luminescent material, hands with luminescent material, 24-hour display with a small blue hand at the 4 o’clock position, date at 9 o’clock with magnifier.

Bracelet:
316L stainless steel. High quality, individual links screwed together, polished center links, safety deployment clasp, band lug width: 22 mm, maximum wrist circumference: 22 cm.

As is the case with many watch brands, the user manual (description) must be downloaded from the internet.