Sinn Spezialuhren 456 St I B

The Sinn 456 St I B, reference 456.013, has a steel case measuring 28 mm across, water resistant to 200 metres. The polished case is 9 mm thick with a see-through back. Self-winding calibre ETA 2671 is anti-magnetic and shock resistant. A sapphire crystal fronts the UV-resistant blue electroplated dial with central seconds. Hand-attached appliques and the hour and minute hands carry luminous paint. A date display joins the time indications.