The Sea-Dweller and Rolex Deepsea are ultra-resistant diving watches designed by Rolex for seabed exploration. Airtight up to 1220 meters on Rolex Sea ‑ Dweller models, launched in 1967, and up to 3900 meters on Deepsea models presented in 2008. They are the quintessential manifestation of Rolex’s leadership in diving watches and the result of decades of collaboration with diving professionals. In 2014, Rolex launched a special version of the model, the Rolex Deepsea with a D-blue dial, to commemorate James Cameron’s historic solo immersion at the bottom of the Mariana Trench, about 11,000 meters deep. Its sphere, which gradually goes from bright blue to deep black, celebrates a man’s journey to the deepest point on the planet.