Sinn U2
Made of German submarine steel, the Sinn U2 is a professional diving watch for use in the most extreme conditions. Thanks to the innovative use of the robust U-Boat material, the watch is extremely seawater-resistant and anti-magnetic. The technology behind the rotating bezel is also innovative. Instead of connecting the hardened diver's bezel to the case using a snap mechanism, as usual, Sinn developed its in-house mounting device that is highly shock-resistant. The U2 collection, along with Sinn's U1 series, is one of the professional tool watches that have proven successful worldwide.