The Rolex Oyster Perpetual Sea-Dweller, reference 16660, is a true professional diver’s watch built for uncompromising performance. Its robust 40 mm steel case, black dial, sapphire crystal, and 60-minute rotatable black bezel deliver legibility and purpose-driven design. Powered by the automatic Calibre 3035 with a power reserve of approximately 50 hours, and fitted with an Oystersteel Oyster bracelet with Oysterlock and Fliplock clasp, this distinguished reference offers exceptional robustness, heritage, and collector appeal.
case materialSteel
diameter40mm
modelM16660 Oyster Perpetual Sea-Dweller
original caseNo
original papersNo
reference16660
year1987
bezelBezel rotatable, Black, 60 minutes
braceletOystersteel bracelet in Oyster with Fliplock, Oysterlock
calibre3035
crystalSapphire
dialDIAL, BLACK
movementAutomatic
power reserveApproximately 50 hours
Presented in 1967, the Oyster Perpetual Sea-Dweller was created to accompany the pioneers of deep-sea diving.It is notably equipped with the helium escape valve, an innovation that has played a key role in underwater research since it first accompanied a new professional diving technique: saturation diving. Initially capable of descending to 2,000 feet (610 meters) deep, since 1978 the Sea-Dweller has been guaranteed waterproof to a depth of 4,000 feet (1,220 meters).
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