Omega Style No: 215.63.46.22.01.001 Omega Planet Ocean 600 M Omega Co-axial Master Chronometer GMT Deep Black Watch - 45.5 mm Black Ceramic Case - Sedna Gold Unidirectional Bezel - Black Dial - Black Water Resistant Leather Strap

45.5 mm black ceramic case with anti-magnetic properties and helium escape valve, transparent back, 18K Sedna gold screw-in crown, 18K Sedna gold unidirectional rotating bezel with black ceramic inserrt featuring a Ceragold diving scale, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, black dial with 18K Sedna gold Arabic numerals and hands, caliber 8906 Self-winding chronometer movement with Co-Axial escapement and GMT time zone function, black water resistant leather strap with rubber lining. Water resistant to 600 m (2000 ft).