Sinn Spezialuhren 1739 St I S

The Sinn 1739 St I S, reference 1739.012, uses a 39 mm polished steel case with a see-through case back. At 9.1 mm thick, the case is water resistant to 100 metres. Calibre SW300-1 winds automatically. The black electroplated dial shows hours and minutes beneath a slightly curved sapphire crystal. Sunburst decoration extends across the dial surface. Rhodium plating finishes the hands and the individually hand-attached appliques.