Description: Rolex Sea-Dweller 16600 Pre-owned Rolex Sea-Dweller ref 16600 (2000 – 2001) has one of the longest-running chapters in the model’s history, produced from 1989 through around 2009. It carried forward the core formula established by the earlier “Triple Six,” pairing a 40mm Oyster case with a sapphire crystal and a substantial 1,220-meter depth rating. It features a black dial and black bezel, plus a helium escape valve to support its incredible water resistance.