Watchuwant is now WatchBox! Subscribe to our channels for the best luxury watch content! Omega Seamaster is a name that commands respect from fans of luxury dive watches. Since 1957, the Seamaster has held the line against its eternal rival from Geneva, the Rolex Submariner, but the latest generation of Omega Seamaster Planet Ocean packs the tech and taste to gain a jump on the stolid "Sub." Omega opens its volley with equal measures of class and mass; the 42mm stainless steel case features a full-bodied presence that surpasses the comparatively dainty Submariner's 40mm span. Enthusiasts with large wrists or Hublot-era standards of case size will find the Omega Seamaster Planet Ocean the perfect go-to when the mantra is "go-big or go home." At the same time, 42mm ensures that this Omega Seamaster remains viable for a large range of wrists; the forearms of Shaq are not required. Inside its burly ferrous carapace, the Omega Seamaster Planet Ocean 600M benefits from the refinement of Omega's caliber 2500 co-axial movement. With a George Daniels co-axial escapement, automatic winding, a jump-date, and a 42-hour power reserve this COSC automatic chronometer takes the fight to Rolex in the tech department. And check out the three-link stainless steel dive bracelet. While Omega's Seamaster line has featured some of the finest bracelets of recent decades, the Planet Ocean 600M Co-Axial sets a new standard. Each link is beautifully finished and supple on the skin, but the piece is more than comfortable; it's formidable to behold and reassuringly solid. The Planet Ocean bracelet is rock solid, and it boasts a clasp to match. With twin-trigger actuation, the clasp offers the kind of security that no friction-fit competitor can match. Even better, the clasp offers one of the best deployant dive extensions in the business; it's equally useful over a dive suit or a winter coat. See this 42mm stainless steel Omega Seamaster Planet Ocean 600M Co-Axial in high-resolution images on www.thewatchbox.com. Video and content by Tim Mosso.