More Rolex watchmaking at rolex.comRinglock SystemDeepsea /deep•sea /: 1. A place of
unfathomable pressure. 2. Rolex’s most over-engineered divers’ watch, featuring thepatented Ringlock System, a lightweight,yet nearly indestructible, nitrogen-alloyedinternal frame. 3. Capable of withstandingover three tonnes of force and depths of3,900 metres. 4. Used by professional diverswhen ultimate reliability and robustnessare a must. 5. Built for the extremes.- The Rolex Way.