Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer Chronograph Deep Black Watch - 45.5 mm Black Ceramic Case - Unidirectional Bezel - Black Ceramic Dial - Black Rubber Strap - 215.92.46.51.01.001

45.5 mm black ceramic case with helium escape valve, transparent back, screw-in crown, unidirectional rotating bezel with orange rubber and Liquidmetal diving scale, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, black ceramic dial with 18K white gold hands and indexes, caliber 9900 self-winding Co-Axial master chronometer movement with chronograph and date functions, approximately 60 hours of power reserve, black rubber strap with orange stitching and an anti-bacterial treatment. Water resistant to 600 m (2000 ft).