Sinn Spezialuhren 203 St

The Sinn 203 St, reference 203.010, is a chronograph with a polished steel case 41 mm in diameter and 16 mm thick. A diver's rotating bezel ratchets in minute increments around the dial. Beneath sapphire crystal, the matte black dial combines small seconds, date and weekday indications with luminous hour and minute hands. Self-winding calibre Valjoux 7750 is shock resistant. Both the crown and the push-pieces screw down against the case.