Launched in 1967, the Rolex oyster perpetual Sea-Dweller watch is an important equipment for professional divers of French Comex diving company, due to participating in the Hydra ⅤⅠⅠⅠ task of this company to refresh the world record of opening water deep diving record (534 meters), it gained great reputation in the world. Nowadays, Rolex sea dweller replica while retaining the original style of aesthetic characteristics, even more adds innovative technologies to create new oyster perpetual Sea-Dweller 4000 watches.

In the deep diving activity, watches and divers must adapt to the mixed gas in high pressure environment. This gas is composed of light gas such as helium or hydrogen, among which as a result of the helium gas featuring highly volatile and the smallest molecular, so the helium can gradually penetrate into the watch from rubber gasket. In order to release the gas safely and avoid appearing deadly decompression sickness, divers must be reduced pressure for a long time before carrying out of water; And at the same time, and at the same time, the wrist watch must also be effectively discharged the excess of helium in the watch case, in order to avoid the watch mirror rapidly popup due to the internal pressure.

Therefore, Rolex especially assembled a one-way valve on the side of the case, when the case is beyond a specific level of internal pressure, this device will automatically start, which can let the gas release from the case, and will not affect the waterproof performance of this Rolex wrist watch. This patent design was applied in the first professional diving watch Oyster Perpetual Sea-Dweller in 1967, which made it the designated watch of the France Comex diving company in the near future. Firstly it is the deep sea record of 534 meters in 1988, then it again created the test depth of 701 meters in hyperbaric oxygen chamber in 1992.