OMEGA Seamaster Diver 300M

The Omega Seamaster Diver 300M 210.32.44.51.01.001 is a chronograph in a 44 mm steel case, 17.2 mm thick with a lug-to-lug of 52.8 mm. A unidirectional rotating bezel surrounds the black dial, covered by a domed sapphire crystal with antireflective treatment on both sides. The self-winding calibre 9900 is a Master Chronometer movement with column wheel, Co-Axial escapement and silicon balance spring, resistant to magnetic fields up to 15,000 gauss, with 60 hours of power reserve. Chronograph functions run alongside a date display and small seconds, and the sapphire display back shows the movement. A black rubber strap closes on a steel pin buckle. The screw-down crown helps hold the case to its 300 metre rating.