A true icon for divers and marine engineers, the Rolex Sea-Dweller is back in an updated version that benefits from Rolex’s latest technical innovations while maintaining the design code of the original model.
Originally introduced in 1967, the Sea-Dweller was developed to increase the performances of the Submariner model pushing waterproofness to a depth of 610 metres (2,000 feet) initially and then to 1,220 metres (4,000 feet) in 1978. Thanks to the patented helium escape valve eliminating the excess helium, Rolex solved the problem that arises In habitats at overpressure, when the inner part of the watch case becomes saturated with this highly volatile gas as the pressure inside the watch case equalises with that inside the chamber.
The 40 mm satin finished steel case maintains the same proportion of the so-called "supercase" already introduced for the Submariner and GMT II models but it is thicker.
The unidirectional rotatable 60-minute graduated bezel is made of ultra-resistant black Cerachrom ceramic while the engraved numerals and graduations are coated with platinum via magnetron sputtering (PVD).
The black satin-finished dial is the ideal background for the white gold hands and hour markers treated with Chromalight for long-lasting luminescence.
Other distinctive features of the new Rolex Sea-Dweller 4000 Ref. 116600 (where 4000 stands for waterproofness to 4,000 feet or 1,220 metres) are the paramagnetic blue Parachrom hairspring used for the COSC-certified automatic movement and the Oysterlock folding safety clasp with Glidelock extension system (20 mm in increments of 2 mm).
This is certainly a very much welcome BaselWorld 2014 novelty for the fans of the Sea-Dweller that did not fall in love with the bigger Deepsea model presented by Rolex in 2008.