Incredibly rare and collectible unworn Rolex 16600 Sea-Dweller watch. 2008. This watch has never been worn. It is still factory stickered and 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.