Seamaster Planet Ocean Ultra Deep 6000M

The Omega Seamaster Planet Ocean Ultra Deep 6000M, reference 215.30.46.21.06.001, represents the most extreme expression of Omega's Planet Ocean diver line. Introduced in 2022 and built around a 45.5 mm case in Omega's proprietary O-MEGASTEEL alloy, it is rated to a depth of 6,000 metres — a specification that places it among the most capable production dive watches ever made. The gradient grey-black dial and Calibre 8912 movement complete a package that bridges deep-sea engineering with refined finishing.

The Planet Ocean Ultra Deep concept traces its origins to Omega's involvement in record-setting deep-sea diving expeditions, which pushed the brand to develop case architectures and materials capable of withstanding crushing abyssal pressures. O-MEGASTEEL, a proprietary steel alloy developed by Omega, was central to achieving the structural integrity required at 6,000 metres without resorting to titanium or exotic composites alone. The reference 215.30.46.21.06.001 entered the catalogue in 2022 as a production realisation of those expedition-grade ambitions, making extreme depth ratings accessible within the standard Seamaster line. It stands as a direct descendant of the Ultra Deep prototype watches that accompanied manned submersible dives to some of the ocean's greatest known depths.