Pre-Owned Rolex Sea-Dweller 4000 (126600) self - winding automatic watch features a 43mm stainless steel case with a black Cerachrom cezel surrounding a black dial on a stainless steel Oyster bracelet with folding buckle. Functions include hours minutes seconds date and helium release valve. This watch comes with the original box. Scattered Serial. We back this watch with a 2-Year WatchBox warranty!