Omega Seamaster Planet Ocean Ultra Deep 6000M (Titanium)

In 2019 Omega's Planet Ocean Ultra Deep Professional prototype went to 10,928 m, the bottom of the Mariana Trench, on the Five Deeps Expedition, and this is the commercial version in sandblasted Grade 5 titanium, case, caseback, bezel and crown, rated to 6,000 m and tested with a 25 percent margin. It is a large tool, 45.5 mm across, 18.12 mm thick and 56 mm lug to lug, with built-in Manta lugs and an asymmetric case borrowed from the prototype. A 5.2 mm semi-conical sapphire takes the pressure, and the case needs no helium valve because it is built to resist helium. The dial is ceramised titanium with cyan numerals and no date, and the watch is ISO 6425 certified within its Master Chronometer tests. The co-axial 8912 runs 60 hours. It comes on a NATO strap woven from recycled fishing nets with a titanium buckle, and weighs 123 g.

Written 28 September 2026 from Monochrome.