The helium valve is a safety feature which, during the decompression phase, releases the gases that infiltrate into the watch during caisson dives. rolex oyster perpetual date sea-dweller watch 40mm replica watch size is adapted to the dimensions of the case to achieve optimal waterproofness. The helium valve is made of high-performance stainless steel.The case back is made of a titanium alloy, an extremely resistant stainless material. It is held in place against the high-performance ring by means of a 904L-steel ring.
A watch developed for extreme depths, guaranteed waterproof to 3,900 metres (12,800 feet), the DEEPSEA required the design of a case with a unique architecture, the RINGLOCK SYSTEM. This innovation patented by Rolex consists of a combination of three distinctive features:
As the diver resurfaces, the helium valve prevents damage to the watch.The rolex sea dweller 40mm replica responds to the most exacting demands of professional divers in terms of robustness, precision and reliability. The Triplock winding crown, equipped with three seals and screwed onto the case, completes this ingenious waterproof system. Indeed, between dives at great depths, professional divers use pressurised caissons in which they breathe high-pressure gas mixtures, notably containing helium, a very volatile gas that penetrates into the watch.
Entirely developed and manufactured by Rolex, the DEEPSEA is a totally new watch that benefits from important technical innovations. It is equipped with a RINGLOCK SYSTEM, a new case architecture patented by Rolex, which allows the watch to resist the colossal pressure exerted by water at great depths. It is the first watch to feature a bracelet with a double extension systemmaking it easily adaptable for greater comfort in wear over a diving suit.
It illustrates the pioneering spirit that led Rolex to develop, as early as the 1950s, divers’ watches like the Submariner and the Sea-Dweller.With its intrinsic capabilities, the rolex sea dweller replica takes a rightful place in the prestigious Oyster family. Its name pays tribute to the Deep Sea Special, the experimental prototype that in 1960 plunged to a depth of 10,916 metres in the Mariana Trench.