Waterproof to a depth of 1,220 metres (4,000 feet), this 40 mm technical divers' watch features the latest in Rolex innovation. Originally designed for the pioneers of professional deep-sea diving, the Sea-Dweller 4000 is equipped with one of the inventions that contributed to its stature: the helium escape valve, patented by Rolex.
The characteristically shaped middle case is crafted from a solid block of particularly corrosion-resistant 904L steel. The Sea-Dweller 4000 is equipped with calibre 3135, a self-winding mechanical movement entirely developed and manufactured by Rolex. Like all Rolex Perpetual movements, the 3135 is a certified Swiss chronometer.