Rolex Sea-Dweller 1665

Rolex Reference 1665 Sea-Dweller | A stainless steel automatic wristwatch with date and bracelet, Circa 1975

Dial: black Caliber: cal. 1570 automatic, 26 jewels Movement number: D'058'945 Case: stainless steel, screw down case back Case number: 4'057'078 Closure: stainless steel Rolex Oyster bracelet with folding clasp Size: 40 mm diameter, bracelet circumference is approximately 200 mm Signed: case, dial and movement Box: no Papers: noIntroduced in 1967, the Rolex Sea-Dweller was developed as a solution for professional divers who required a more robust tool watch. Divers had reported that the crystals on their Submariners occasionally detached during post-dive decompression, prompting Rolex to engineer the helium escape valve—an ingenious mechanism that allowed built-up gas to safely vent without compromising the integrity of the crystal. The reference 1665, known as the “Great White,” takes its name from the all-white text on the dial, distinguishing it from the earlier “Double Red” version. Sharing the same reference number, 2000 ft water resistance, and case characteristics, the “Great White” represents a key evolution in the history of the Sea-Dweller.