The Rolex Deepsea. When pressure became part of the solution. Introduced in 2008, its patented Ringlock system's case architecture uses the crushing weight of the ocean to its advantage, reinforcing the integrity of the seal. Waterproof to 3,900m (12,800ft). In Oystersteel with a D-blue dial, 44mm, calibre 3235. #Rolex #RolexDeepsea #OysterStory