Pre-owned Omega Seamaster Planet Ocean 600M Ultra Deep ref 215.32.46.21.03.001 (2023) is one of the most extreme dive watches Omega has ever brought to market. It traces back to the Five Deeps Expedition in 2019, when the original Ultra Deep reached the deepest point on Earth. This version takes that same concept and makes it wearable. The 45.5mm case is made from O-MEGASTEEL, designed for strength and corrosion resistance, and it’s paired with a black ceramic bezel with a Liquidmetal dive scale. The dial features a blue-to-black gradient, echoing the descent into the ocean’s depths. The 18k white gold hands and markers make sure everything is sharp and easy to read. This watch is rated to an incredible 6,000 meters. Far beyond what most will ever need. But that’s the point. Inside is the caliber 8912, a Co-Axial Master Chronometer movement with a reasonable 60-hour power reserve. The rubber strap with cyan lining adds a bit of contrast. Technical. Purpose-built. And unlike almost anything else out there. Shop OMEGA Seamaster Collection