OMEGA Seamaster Diver 300M

The Omega Seamaster Diver 300M 210.62.44.51.01.001 is a chronograph in Sedna gold, measuring 44 mm across. The case stands 17.3 mm thick with a 52.8 mm lug-to-lug span, and the black dial sits under a domed sapphire crystal with antireflective treatment on both sides. Inside is the self-winding calibre 9901, a Master Chronometer movement with column wheel and Co-Axial escapement, resistant to magnetic fields up to 15,000 gauss, with 60 hours of power reserve. The unidirectional rotating bezel accompanies a date display and small seconds, and the sapphire caseback shows the Sedna gold rotor with Geneva waves in arabesque. A black rubber strap closes with a Sedna gold pin buckle. The screw-down crown and helium valve help the case hold its 300 metre water resistance rating.