Rolex Sea-Dweller Ref 16660 Stainless Steel Replica

The Rolex Sea-Dweller Ref 16660, often nicknamed the “Triple Six,” is a legendary diver’s watch that represents a major evolutionary leap in Rolex’s professional tool watches. Introduced in the early 1980s, this reference was the first Sea-Dweller to feature a sapphire crystal and a significant increase in water resistance to 1,220 meters (4,000 feet)—a remarkable engineering feat for the time.

Crafted from robust stainless steel, the 16660 houses a 40mm case with a unidirectional rotating bezel, essential for timing deep-sea dives. It is powered by the reliable and precise Rolex Caliber 3035, which introduced a quickset date function, allowing the wearer to adjust the date independently of the time. The dial is clean and utilitarian, with luminous markers and hands for visibility in low light, and features the iconic helium escape valve, a must-have for saturation diving.

The 16660 also retains the traditional Sea-Dweller look—without the date magnifier (Cyclops)—preserving its tool-watch character. As a transitional model bridging vintage and modern, the Sea-Dweller 16660 is highly sought after by collectors and divers alike for its durability, history, and performance.