Sinn Spezialuhren U1 S

The Sinn U1 S, reference 1010.020, is a dive watch in a 44 mm German Submarine Steel case water resistant to 1000 metres. Measuring 14.7 mm thick, the case has a screw-down crown. Its Black Hard Coating rests on a TEGIMENT-hardened surface for scratch resistance. The captive diver's bezel has minute ratcheting. A self-winding movement, calibre SW200-1, provides the mechanical timekeeping. Central seconds and a date appear against the matte black dial beneath sapphire crystal, with luminous hands and indices.