Sinn Spezialuhren EZM 4

The Sinn EZM 4, reference 157.022, is a chronograph with a 40 mm steel case and a crown on the left. Its bead-blasted case measures 15 mm thick and is water resistant to 200 metres. Calibre Lemania 5100 has automatic winding, shock resistance and anti-magnetic properties. The matte black dial shows the date, weekday and small seconds beneath sapphire crystal. The crown screws down into the case, while luminous hands and indices mark the time.