Description: Omega Seamaster Planet Ocean 600M Pre-owned Omega Seamaster Planet Ocean 600M Ultra Deep ref 215.30.46.21.06.001 (2023) takes the idea of a dive watch and pushes it well past what most people will ever need. The Ultra Deep traces back to Omega’s 2019 Five Deeps Expedition, where a prototype reached the deepest point on Earth. This is the production version of that watch, still made to extreme standards with a 6,000-meter depth rating and full ISO certification