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The iconic Rolex Sea-Dweller “Triple Six” ref. 16660, the transitional tool watch that quietly changed dive-watch history. Introduced as the bridge between the original Sea-Dwellers and the modern Deepsea lineage, the 16660 brought 40mm proportions, a helium escape valve, sapphire crystal, and a depth rating doubled to 1,220 metres. Early examples like this 1982 model retain the matte dial with creamy tritium lume, giving it that perfect blend of vintage warmth and hardcore functionality. DID YOU KNOW: The “Triple Six” nickname comes from the reference number itself — and it was the first Sea-Dweller ever fitted with a sapphire crystal, marking Rolex’s move into a new era of professional dive watches. Shop Rolex Sea-Dweller 16660 at BQ Watches — DM us or call us on 01923 85 58 58 to find out more!📲 #Rolex #SeaDweller #16660 #VintageRolex #DiveWatch