316L stainless steel case with black ceramic bezel, 43 mm diameter, 15 mm height, double-sided antireflective sapphire crystal, sapphire crystal case-back, water-resistant to 100 meters / 330 feet. Edouard Koehn Tempus II Monopusher self-winding mechanical Chronograph movement entirely manufactured in La Chaux-de-Fonds, Switzerland. 29 rubies, 28’800 Vibrations per Hour (4 Hz) with oscillating weight mounted on ceramic ball-bearings. 48 hours power reserve. Open-worked golden dial, luminescent hour markers. Luminescent skeleton hands. Black colour high grade vulcanized rubber strap with stainless steel pin buckle. Functions: Hour, Minutes, Seconds, 60 seconds central Chronograph hand, 30 minutes Chronograph counter.