A Rolex Oyster Perpetual Date Sea-Dweller 4000 automatic wristwatch, ref. 16600 in stainless steel, black dial, lume hands and markers, black aluminium insert bezel, on a cal 3135 self wind movement, s/n. N212049, size 40 mm, wt. 148.07g, water resistant to 4000 feet, working, oyster bracelet, spare link, with box, swing tag, year of production - 1991.