The Rolex Sea-Dweller Deepsea Reference 116660 is a professional-grade dive watch built to withstand extreme underwater conditions. Crafted from robust 904L stainless steel, its 44mm case is engineered with Rolex’s patented Ringlock System, allowing for an impressive water resistance of up to 3,900 meters (12,800 feet). The helium escape valve ensures reliability during saturation dives, while the unidirectional Cerachrom bezel with platinum-coated numerals provides precise dive timing. The black dial features Chromalight luminescence for superior readability in low-light conditions, along with the signature "Deepsea" inscription. Powered by Rolex’s Caliber 3135 automatic movement, this timepiece delivers outstanding accuracy and durability. Finished with an Oyster bracelet equipped with a Glidelock extension system, the Sea-Dweller Deepsea 116660 is a true tool watch built for the most demanding underwater explorers.

Today's example comes to us as watch only in excellent condition. The case is rich and appears unpolished. The bezel is clean, and the bracelet has 11 total links with no stretch.