Sinn Spezialuhren 103 St Ty

The Sinn 103 St Ty, reference 103.050, is a chronograph with a polished steel case measuring 40 mm across. The 15.5 mm thick case is water resistant to 200 metres and has a screw-down crown. Calibre Valjoux 7750 is the movement. Beneath plexiglass, the matte black dial displays small seconds with day and date indications. Luminous numerals and hands share the display with a tachymeter scale.