Edouard Koehn Tempus I Skeleton Watch, 43mm Black Skeleton Dial, EKCHR04SRBK

316L stainless steel case with black PVD coating, 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 I Tri-Compax self-winding mechanical movement entirely manufactured in La Chaux-de-Fonds, Switzerland. 27 rubies, 28’800 Vibrations per Hour (4 Hz) with oscillating weight mounted on ceramic ball-bearings. 48 hours power reserve. Open-worked black dial, luminescent hour markers. Luminescent skeleton hands. Black color high grade natural rubber strap with black PVD coating stainless steel tang buckle. Functions: Hour, Minutes, Seconds, Date, 60 seconds central Chronograph hands, 30 minutes and 12 hours Chronograph counters.