OMEGA Seamaster Diver 300M

The Omega Seamaster Diver 300M 210.30.42.20.06.002 is a dive watch with a 42 mm steel case. It measures 13.8 mm thick and 49.7 mm between the lugs, and the grey dial sits under a domed sapphire crystal with anti-reflective treatment. A unidirectional rotating bezel and a screw-down crown surround the case, along with a helium valve for saturation diving. Inside is the self-winding calibre 8806, a Master Chronometer movement certified by METAS with a silicon balance spring and resistance to magnetic fields up to 15,000 gauss. Power reserve runs to 55 hours. The sapphire caseback shows the finished rotor and bridges. A steel bracelet with a foldover clasp completes the watch, which Omega rates water resistant to 300 metres.