Sinn Spezialuhren 656 S

The Sinn 656 S, reference 656.020, has a 38.5 mm steel case water resistant to 200 metres. Matte black chrome plating finishes the case, which is 10 mm thick. Beneath the sapphire crystal, a matte black dial displays central seconds and the date. Large numerals and indices carry luminous paint, as do the hour and minute hands. The movement is self-winding calibre ETA 2824-2. Magnetic Field Protection guards against magnetic interference, while the crown screws down.