Pre-owned Omega Seamaster Planet Ocean Ultra Deep ref 215.30.46.21.03.001 (2023) made history in 2019 when it ventured to the deepest spot on Earth as part of the trailblazing Five Deeps Expedition. The venture was the first to successfully travel to the deepest point in each of the Earth’s five oceans with a manned crew. The Ultra Deep present during the expedition has been redesigned for commercial sale, featuring a seriously impressive 6,000-meter depth rating, 45.5mm O-MEGASTEEL case, a clasp with an extra diver extension clasp, a flexible grade 5 titanium case back, and a mesmerizing lacquered blue gradient dial developed to resemble the ocean’s depths. The polished black ceramic bezel is decorated with Omega’s signature Liquidmetal™ diving scale, and the dial features 18k white gold hour markers and hands filled with legible Super-LumiNova. Hard at work inside the case is the caliber 8912 self-winding Master Chronometer movement with anti-magnetism up to 15,000 gauss and a 60-hour power reserve. Shop OMEGA Seamaster Collection