Movement Manufacture Calibre MT5402 (COSC) Self-winding mechanical movement with bidirectional rotor system Power Reserve Power reserve of approximately 70 hours Winding Crown Screw-down winding crown in steel with the TUDOR rose in relief Waterproofness Waterproof to 100m (330 ft) Bezel Smooth satin-brushed steel Dial Black, domed Crystal Domed sapphire crystal Bracelet Steel bracelet with three links and a folding clasp with the TUDOR “T-fit” safety catch. the watch is 100% authentic in a very good condition and in perfect working order.