Under Rolex warranty until July 2022. Only in production for 4 years, this original reference 116660 Deepsea D-Blue was made in response to James Cameron's astonishing solo journey to the bottom of the Marianas Trench. The graduated blue-to-black dial has 'Chromalight' hour markers that glow vivid blue at night or deep below water. Other Rolex special features include the black zirconium dioxide 'Cerachrom' one-directional bezel, and helium escape valve. The Rolex Glidelock clasp makes for easy adjustment on the wrist, and this awesome diver's watch is waterproof to 3900m. Accompanied by its Rolex box and Rolex warranty card.