Rolex sea dweller
The final and official version of the Rolex Sea-Dweller (reference 1665) was presented in 1971. The Sea-Dweller, which literally means "the abyss dweller", was designed according to the technical requirements of COMEX, a prominent French submarine operating company. Until then, COMEX operators were equipped with the Submariner 5513, but it had pressure-related problems during deep dives that could lead to the glass breaking. Rolex decided to fix this problem by creating a new model with a small valve on the left side of the case that lets helium escape during decompression.
The Rolex Sea-Dweller Deepsea 116660 is water resistant up to 3900 meters or 12800 feet. This water-resistance is achieved by the Ringlock system developed by the brand. This highly durable diving model was designed by Rolex to conquer the depths. It has a 44 mm case and has "DEEPSEA" written on the dial.
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