Sinn Spezialuhren 104 St Sa A

The Sinn 104 St Sa A, reference 104.011, has a 41 mm polished steel case water resistant to 200 metres. This watch displays the date, weekday and central seconds on a matte black dial with luminous numerals and indices under sapphire crystal. The screw-down crown projects from the case. Calibre SW220-1 winds automatically. The case measures 11.9 mm thick and has a see-through back. The captive pilot's bezel rotates in either direction with minute ratcheting and a luminous key mark.