"Rolex 16600 Sea-Dweller 4000 40mm 2001 K-Serial WXO"

Rolex Sea-Dweller 4000 16600 40mm 2001 WxO

The Rolex Sea-Dweller 4000 reference 16600 is a cornerstone of Rolex’s professional dive watch heritage, engineered for extreme underwater performance. Crafted in stainless steel, this model features the classic 40mm Oyster case with a robust helium escape valve, purpose-built for saturation diving. The clean black dial and matching bezel offer exceptional legibility, while the absence of a Cyclops lens preserves the Sea-Dweller’s utilitarian character. As a K-serial example from 2001, it represents the mature evolution of the five-digit Sea-Dweller lineage.

Key Features

Model: Sea-Dweller 4000

Reference: 16600

Case Size: 40mm

Case Material: Stainless Steel

Dial: Black dial

Bezel: Black unidirectional rotating bezel

Movement: Automatic mechanical movement

Crystal: Sapphire crystal (no Cyclops)

Bracelet/Strap: Oyster bracelet, stainless steel

Water Resistance: 1,220 metres (4,000 feet)

Functions: Hours, minutes, seconds, date

Year & Condition
2001 Model (K-Serial). Good pre-owned condition — signs of wear consistent with age, well-preserved case proportions, and a clean, legible dial. Supplied as Watch Only (WxO).

Inclusions
Watch Only.