Rolex Sea-Dweller DEEPSEA 116660. Stainless steel 43mm case. Auto wind certified chronometer movement. Black dial with date display. Unidirectional rotating black ceramic bezel. Scratch resistant sapphire crystal. New Ring lock system allows watch to withstand 2.98 metric tonnes of water pressure. Water resistant to 12,800 feet with helium excape valve for extreme depths diving. Stainless steel oyster bracelet with fliplock clasp and divers extension.