Sinn Spezialuhren 456 St GG I

The Sinn 456 St GG I, reference 456.020, has a yellow gold bezel and a polished 28 mm steel case. The case incorporates a see-through back, measures 9 mm thick and is water resistant to 200 metres. Black electroplating finishes the dial beneath a sapphire crystal. The hand-attached hour appliques and the hour and minute hands are luminous. A date display sits alongside central seconds. Automatic winding comes from calibre SW100, an anti-magnetic movement.