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Rolex

Sea-Dweller 16660

Ref. 16660

The Rolex Sea-Dweller 16660, also known as the 'Triple Six,' is a professional dive watch introduced as an evolution of the original Sea-Dweller. Notable for its increased water resistance to 1,220 meters and the introduction of a sapphire crystal, it represents a key transitional model in Rolex's dive watch lineage. Its robust construction and COSC-certified chronometer movement make it highly collectible among enthusiasts.

crystalSapphire
braceletStainless steel with fold-over clasp and safety
movementMechanical (Automatic), COSC-certified chronometer
dial colorBlack
case diameter40 mm
case materialStainless Steel
water resistance1220 meters
year1978–1989

A registered Rolex 16660 carries a permanent RGATT passport: origin, history and owners, verifiable by anyone, and a documented history makes a watch easier to sell.

RGATT

The permanent registry for watchmaking. Provenance you can verify, trust you can transfer.

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RGATT is a provenance registry, not a place to buy or sell watches

RGATT operates a provenance and traceability registry for fine watches. It does not list watches for sale, is never a party to a sale agreed between members, and never holds, escrows or moves funds relating to such a sale. Registration establishes the authenticity of a piece as a best-efforts obligation and is not a warranty of its condition. A clean result in the stolen registry means no theft report matches, not that a watch is guaranteed free of any claim.

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