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The Rolex Sea-Dweller is a line of diver's watches manufactured by Rolex, with an underwater diving depth rating of 610 metres (2,000 ft) for the vintage models and up to 3,900 metres (12,800 ft) for the most recent Sea-Dweller DEEPSEA model.
The Rolex Submariner and the Rolex Sea-Dweller are two of the truly exceptional sport models Rolex makes. Meant for the divers, both these models have taken the brand 'Rolex' to new heights. These two models are popular all over the world for their ability to perform accurately even deep under water.
What is the difference between Sea-Dweller and Submariner ?
The basic difference between the two lies in their depth ratings. While the current Submariner models have a maximum depth rating of 300 meters or 1000 feet, the current versions of Sea-Dweller can comfortably go underwater up to a depth of 4000 feet (all earlier models had a depth rating of 2000 feet). As a result, the Submariner is the choice of amateur and recreational divers whereas professional divers go for the Sea-Dweller. The underwater treasure hunters also wear Sea-Dwellers.
Another major difference between the two models is the presence of a one-way gas escape valve opposite the winding crown in the Sea-Dweller. This special feature has been added to it to protect the watch from internal pressure, which builds-up when the divers go to the decompression chambers. Deep sea divers use a helium/oxygen mix in their air tanks, which can easily permeate the crystal of the watch. However, during decompression, helium particles are not able to come out of the watch, thus, blowing the crystal out of the watch. The gas escape valve was the a solution to this problem, which has proved extremely effective. The current Sea-Dweller models feature a larger and improved gas escape valve.
You will also find that the Sea-Dweller is bigger than the Submariner. This primarily is because of the thicker sapphire crystal that makes the former about 4mm thicker than the latter. The thicker crystal also leads to another notable difference between the two. Although the Sea-Dweller displays the date, it does not feature the Cyclops lens (magnifying lens). The thicker crystal does not allow for such a magnifying lens.
