Sinn Spezialuhren 903 St Silber

The Sinn 903 St Silber, reference 903.042, has a 41 mm steel case finished with polished and satinised surfaces. This chronograph displays small seconds and a date on a silver electroplated dial beneath sapphire crystal. An additional crown operates the interior rotating slide-rule bezel. The case has a see-through back, measures 14.5 mm thick and is water resistant to 100 metres. Automatic calibre SW500 includes a seconds stop. Luminous indices sit beside the dial's counters and the luminous hour and minute hands. The winding crown screws down against the case.