Sinn Spezialuhren 104 St Sa I

The Sinn 104 St Sa I, reference 104.010, is a watch with a polished steel case 41 mm in diameter. Sapphire crystal fronts the matte black dial with luminous hands and indices beside central seconds, date and weekday. A captive pilot's bezel turns both ways in minute steps. The case measures 11.9 mm thick and is water resistant to 200 metres, with a see-through back. Calibre SW220-1 is an automatic movement. The crown screws down against the case.