42 mm titanium and steel case with satin finish Manufacture Calibre MT5612 (COSC)Self-winding mechanical movement with bidirectional rotor system Power reserve of approximately 70 hours Titanium winding crown with TUDOR logo in relief Helium escape valve at 9 o’clock Waterproof to 500 m (1,640 ft) Unidirectional rotatable bezel in titanium, graduated over 60 minutes with ceramic matt blue disc and graduations with white luminescent material Blue with white index Date at 3 o’clock Sapphire crystal Titanium bracelet with folding clasp and safety catch in steel with bracelet extension system developed and patented by TUDOR