Sinn Spezialuhren 156.1

The Sinn 156.1, reference 156.030, is a chronograph with a bead-blasted 43 mm steel case water resistant to 100 metres. A smoothly rotating captive pilot's bezel surrounds the dial. The case is 15.45 mm thick and resistant to low pressure. Calibre SZ01 uses automatic winding and a centrally mounted stopwatch minute hand. The matte black dial displays small seconds and the date under sapphire crystal. Luminous numerals and hour and minute hands mark the time.