Seamaster Planet Ocean 600M Co-Axial Master Chronometer 39.5

The Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer in 39.5 mm represents the more wearable end of the Planet Ocean family, pairing a striking blue dial with a stainless steel case rated to 600 metres of water resistance. Introduced in 2016, it houses Omega's Calibre 8800, a movement that meets the stringent METAS Master Chronometer standard for precision, magnetic resistance, and overall performance. The result is a serious diver's watch that transitions naturally from the water to everyday wear.

The Planet Ocean line was conceived as a tool-diver successor within the storied Seamaster collection, drawing on Omega's long association with professional diving and ocean exploration. The 39.5 mm case size was introduced to broaden the line's appeal, offering the full technical specification of its larger siblings in a more versatile diameter. The adoption of the Co-Axial Master Chronometer movement marked a significant milestone, as METAS certification requires each watch to pass eight rigorous tests covering accuracy, power reserve, and resistance to magnetic fields of up to 15,000 gauss. This reference has remained in production since 2016, cementing its place as a core pillar of the modern Seamaster catalogue.