Rolex 16600 Sea-Dweller watch. 2008 It comes with its original box and papers. It can only be described as collectors grade and would make an outstanding investment. the 16600 Sea-Dweller is no longer made and such was its popularity that Rolex re-introduced a ceramic version in 2012. This watch features a uni-directional bezel, helium escape valve and while being similar in appearance to the famous Rolex submariner, the Rolex Sea-Dweller has an increased water resistance of 1220m and were made in far fewer numbers.