Omega Style No: 210.62.44.20.01.001 Omega Seamaster Diver 300M Co-Axial Master Chronometer - 43.5 mm Black Ceramic Case - Black Dial

43.5 mm black ceramic case and helium escape valve, transparent back, domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides, black ceramic dial with laser-ablated waves in positive relief, Calibre 8806 self-winding chronometer movement. Water resistant to 300 metres (1000 feet).