Sinn Spezialuhren 901

The Sinn 901, reference 901.010, is a chronograph limited to 150 pieces with a steel case 38.4 mm wide and 36.8 mm long. The case is 16.5 mm thick, water resistant to 100 metres and finished with polished and satinised surfaces. TEGIMENT hardening improves the case's scratch resistance. A black electroplated dial shows small seconds and a date under sapphire crystal. Luminous appliques mark the hours alongside painted stopwatch indicators. Calibre Valjoux 7750 is self-winding and shock resistant. Temperature Resistance Technology maintains operation through temperature changes.