Rolex proves once again that it is the king of dive watches with the new Oyster Perpetual Deepsea Challenge. The watch takes inspiration from the experimental model that that joined legendary filmmaker and explorer James Cameron on a 35,787 ft descent into the Mariana Trench in 2012. For the Deepsea Challenge, Rolex created a production version of that watch that not only could be worn everyday but exceeds the original depth rating by a little over 300 feet, breaking water-resistance records. The watch also marks the debut of a grade 5 titanium alloy called RLX titanium that allows the watch to be 30% lighter than the experimental model. Additional features include a 50mm case, a unidirectional 60-minute bezel with a Cerachrom insert, a 3230 automatic movement with a 70-hour power reserve, and a matching RLX titanium bracelet.