ROLEX SEA- DWELLER

Half a century has passed since the Oyster Perpetual Sea-dweller, a legend among professional divers’ watches, was created. The new Sea-dweller features a larger 43 mm case and the new calibre 3235, for the first time in a Rolex Professional category watch. A Cyclops lens aids reading of the date and the dial bears the name Sea-dweller in red, a reference to the first model.

A technical divers’ watch, waterproof today to a depth of 1 220 metres (4 000 feet), the Oyster Perpetual Sea-dweller was originally designed for the pioneers of professional deep-sea diving. One of the features that contributed to its stature is the helium escape valve, patented by Rolex in 1967. Without compromising waterproofness, this safety valve regulates the pressure accumulated in the case during the decompression phases of deep-water saturation dives.

The Sea-dweller is equipped with calibre 3235, a new-generation movement developed and manufactured by Rolex. Bearing 14 patents, it offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability. It incorporates the new Chronergy escapement patented by Rolex, which combines high energy efficiency with great dependability. Made of nickelphosphorus, it is insensitive to magnetic interference. It is also rquipped with a self-winding module via a perpetual rotor and has a power reserve extended to approximately 70 hours.

Special dive-specific features include solid-link Oyster bracelet in 904L steel, fitted with an Oysterlock safety clasp that prevents accidental opening, and a double extension system that allows adjustments to be made without the use of tools, so that the watch can be worn comfortably over a diving suit up to 7 mm thick.

Like all Rolex watches, the Sea-dweller is covered by the Superlative Chronometer certification redefined by Rolex in 2015. The precision of a Rolex Superlative Chronometer after casing is of the order of −2/+2 seconds per day, or more than twice that required of an official chronometer.