The U200 SDR diving watch is relatively smaller and coming with lower weight, while maintaining all of the features that other diving watches from the range have. Its movement is ETA 2824-2 automatic that performs 28 800 vibrations per hour and has 25 bearing jewels. Sinn’s diving watches are made of submarine steel that is protected from high pressure, magnetic influences, high and low temperatures and seawater penetration. The watch is also equipped with Sinn’s dehumidifying technology, a captive diver’s bezel with minute ratcheting, crown at 4 o’clock, mission timer design, luminous dial elements and scratch-resistant sapphire crystal glass with anti-reflective coating.