Omega Style No: 210.92.44.20.01.001 Omega Seamaster Diver 300M Co-Axial Master Chronometer Watch - 43.5 mm Black Ceramic Case - Unidirectional Bezel - Black Ceramic Dial - Black Rubber Strap

43.5 mm black ceramic case with helium escape valve, transparent back, unidirectional rotating bezel with white enamel diving scale, domed scratch-resistant sapphire crystal anti-reflective treatment on both sides, polished black ceramic dial with laser-engraved waves, Caliber Omega 8806 self winding movement with a co-axial escapement, chronometer, approximately 55 hours of power reserve, black rubber strap. Water resistant to 30 bar (300 metres / 1000 feet).