Sinn Spezialuhren 556 I RS

The Sinn 556 I RS, reference 556.0106, has a 38.5 mm steel case water resistant to 200 metres. The glossy black dial displays a red central seconds hand beneath sapphire crystal. Luminous hour markers surround the dial's date window. The case is satinised, 11 mm thick and fitted with a see-through back. Inside runs self-winding calibre SW200-1. The screw-down crown sits at the side of the case.