Case material: Steel; Charge: Automatic; Conditions: Never worn Presentation condition : With dealer guarantee ; Model: Sea-Dweller Price on request Gmtbroker Reference: 16660 Rolex diver's watch in matte black. Water resistant to depths of 1220m. 904L stainless steel base with Physical Vapor Deposition (PVD) matte black carbon coating. Diamond-Like Coating (DLC) also applied to increase strength. Swiss Official Chronometer Testing Institute (COSC)-certified chronometer. High-contrast Chromalight display with glow lasting up to 8 hours. Uni-directional rotating bezel with 60-minute graduations to allow for accurate and safe monitoring of diving time and decompression stops. Oyster-style bracelet with flat three-piece links can fit a maximum approximate wrist circumference of 8". Integrated patented Easylink diver's extension at clasp. Swiss automatic (self-winding) movement. Screw-down crown and helium valve. Sapphire crystal. Limited edition to 50. Approx. 40mm dial width, 50mm lug to lug.904l steel. Also known as: Rolex Sea-Dweller Limited Edition, Rolex Sea-Dweller Black Edition, Rolex 16660