The Planet Ocean is Omega's heavy-duty dive watch. While a ubiquitous part of Omega's collection today, the model was a relatively modern addition. First released in 2005, it was a contemporary take on the venerable Seamaster design. It was originally offered with a black dial and bezel as well as an eye-catching orange bezel version. It comes in a substantial case that's both wider and thicker - a necessary change as well as a useful one for divers operating in the dark depths of the sea. By nature, it's less graceful than the Seamaster 300m, but offers an unrivalled level of water resistance and robustness.