Sinn Spezialuhren 717

The Sinn 717, reference 717.010, is a chronograph with a 45 mm steel case. Black Hard Coating lies over a TEGIMENT hardened surface on the bead-blasted case, which is 15.3 mm thick and water resistant to 200 metres. Orange stopwatch hands occupy the centre of the matte black dial beneath sapphire crystal. Calibre SZ01 is self-winding. An interior pilot's bezel has a luminous key mark and uses DSP dynamic sealing technology. A date display and small seconds appear beside luminous numerals and indices.