Sinn U-Series Diver

Sinn's professional divers built from German submarine steel, with tegimented surface hardening and serious water resistance. The U1 is the flagship — a robust, hard-wearing tool diver.

Every Sinn U-Series Diver reference we track, with full specifications and a plain-English breakdown of each reference number. We buy every U-Series Diver reference outright and appraisals are complimentary.