OMEGA Seamaster Diver 300M

The Omega Seamaster Diver 300M reference 210.20.44.51.01.001 is a chronograph with a 44 mm case in steel and gold. The case is 17.2 mm thick and 52.8 mm lug to lug. Calibre 9900 is a self-winding Master Chronometer movement with a 60 hour power reserve. A domed sapphire crystal with anti-reflective treatment on both sides covers the dial, which has a date display and small seconds. Omega rates the case to 300 metres. The watch also has a unidirectional rotating bezel, a helium valve, a screw-down crown and a display back. The bracelet is steel and gold, and it closes with a foldover clasp that has a comfort setting and a diver extension.