OMEGA Seamaster Planet Ocean 600M Co-Axial Master Chronometer 39.5mm Watch OMEGAracing and has a helium-escape valve

and has a helium-escape valve

this outstanding watch includes OMEGA's Co-Axial Master Chronometer Calibre 8900

visible through the domed scratch-resistant sapphire crystal

On the white dial

The dial is again created from polished black ceramic and features blackened applied subdial rings at 3 and 9 o'clock

OMEGA Seamaster Planet Ocean 600M Co-Axial Master Chronometer 39.5mm Watch OMEGAracing and has a helium-escape valveIt was with OMEGAs maritime legacy in mind that the brand launched its Planet Ocean line in 2005. Today, the stylish OMEGA Seamaster Planet Ocean 600M Master Chronometer pays homage to OMEGAs dive watch heritage. This model, with its scratch resistant sapphire crystal, features a black ceramic dial with Arabic numerals and a date window at the 3 oclock position. The black ceramic unidirectional bezel with OMEGA Liquidmetal diving scale is mounted on a