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Omega Seamaster Planet Ocean 600m Co-Axial Luxury Watch Review The Omega Seamaster Planet Ocean 600m Co-Axial combines golden-era Omega dive watch style with the latest Omega-exclusive technology. It's a superb value in a package that rivals and even surpasses the best from Rolex and Breitling. Omega's 2005-present Seamaster Planet Ocean line is graced with time-tested good looks. The Bienne watchmaker takes a styling approach that fuses the best elements of the first half-dozen "Seamaster Professional" watches of the 1950s and 1960s. "Broad Arrow" hands, applied numerals, applied indexes, and the overall lines are true to the classics without stooping to outright replication. It's a look that is guaranteed to age as well as any Rolex Submariner. But Omega has bigger game in its sights: the Rolex Sea-Dweller. At 45.5mm, this Seamaster Planet Ocean is as burly as Rolex's mammoth Deepsea, but it wears more comfortably than that metal monolith. The Planet Ocean sits comfortably on the wrist thanks to smart lug design and a supple bracelet that conforms precisely to the wrist and never pulls hair. Omega's famous twin-trigger clasp permits positive closure and release with no chance of accidental deployment. The entire assembly is a joy to handle an imparts tremendous confidence. Owners can take the same satisfaction in the quality and functional excellence of the clasp's dive extension. Not only does it share the ingot-like structure of the main hinge, but it makes for easy and tool-free adjustment when wearing the watch over wetsuits or winter coats. Technology is the Planet Ocean's forte. In addition to the helium release valve and scratch-resistant ceramic bezel, this Seamaster is endowed with Omega's superb Caliber 8500 co-axial movement. The Cal. 8500 is exclusive to the Omega brand, and it features a long list of innovations. Omega's signature (and still unique) co-axial escapement ensures long-term accuracy, reliability, and minimal maintenance. Two mainspring barrels operating in parallel offer a superior 60-65 hour power reserve. The Cal. 8500's silicon hairspring offers excellent shock and temperature resistance, and it is virtually immune to magnet-induced error. A full balance bridge (dual-anchored) and free-sprung balance ensure outstanding resistance to shock-induced timing errors. All of the above is certified as a Swiss chronometer by the COSC, but Omega's internal standards exceed the COSC's criteria, and Omega tests the watch to -1,+5 seconds as a cased unit. Movement finish is imaginative and extensive for a sports watch in this price class. The Seamaster Planet Ocean features a sapphire display case back - an extreme rarity in the deep-dive watch category. The Caliber 8500 is a handsome device, and the ability to admire its sculpted bridges, great silicon components, and black-oxidized screws is a perk unknown to Rolex owners. This Omega Seamaster Planet Ocean 600M Co-axial is available from with full Omega factory boxes, papers, and accessories. Video and content by Tim Mosso.