Pre-owned Rolex Sea-Dweller ref 16600 (2005 – 2006). Rolex released this variation of the SD in the late 1980s and kept it in production until around 2009. It replaced the previous ref. 16660 (Rolex Triple Six), featuring the same depth rating and sapphire crystal, but with the caliber 3135, an upgrade over the previous caliber 3035. With its steel and black design, white gold hour markers, and 40mm case, many have noticed the watch’s similarities to the Submariner, albeit without the signature Cyclops lens over the dial and with enhanced water resistance. This example from the early 2000s also features Super-LumiNova, which would later be replaced by Chromalight on its 6-digit successors. Shop Rolex Sea-Dweller Collection