Rolex Sea-Dweller Ultimate Guide | Bob's Watches

Our buying guide will tell you everything you need to know about the Sea-Dweller before you invest. Shop the collection now: https://www.bobswatches.com/rolex-sea-dweller-1.html If you’re interested in learning more about the Sea-Dweller collection, including key features of the watch, its evolution, and pricing information, check out our comprehensive guide here: https://www.bobswatches.com/rolex-blog/buying-guides/rolex-sea-dweller-buying-guide.html Rolex’s first foray into producing professional diver’s watches began in the 1950s with the release of the Submariner. While they weren’t the first company to develop a diver’s watch for commercial production, Rolex is, arguably, the most iconic and recognizable brand in the industry. Shop our entire collection of pre-owned Rolex watches: https://www.bobswatches.com/rolex/ The Submariner evolved from a 100-meter depth rating. Eventually, settling on 300 meters of water resistance. While this amount of waterproofness is certainly enough to venture far below the surface of the sea, there was still room for improvement, and the Sea-Dweller was born. One challenge faced while performing deep saturation dives was the accumulation of helium gas within the case, which threatened the watch’s integrity during decompression because it caused the crystal to dislodge entirely from the case itself. To combat this issue, the Helium Escape Valve was developed. This mechanism activates when the pressure inside the case reaches a c