First released in August of 2014 and updated this year, the new Rolex Deepsea D-Blue Dial ref. 126660 just got better if that's even possible at all. A tank of a watch with a 44 mm case and with an ultra thick case construction —17.7 mm thick—, this is the epitome of an ultra-resistant diver's watch engineered by Rolex to conquest the deep. Waterproof to a depth of 12,800 feet —3,900 meters—, the Rolex Deepsea D-Blue Dial ref. 126660 was initially released under reference 116660 to celebrate James Cameron’s historic solo dive documented on National Geographic’s 'DeepSea Challenge 3D' film.