A brand new authentic Rolex Sea-Dweller watch with a black dial and Oystersteel case. Features include an Oystersteel bracelet, Oysterclasp folding clasp, unidirectional rotating bezel ring, silver-tone hour markers against the black face, automatic Chronometer movement (Rolex Calibre 3235), date display function, power reserve indicator showing up to 70 hours of autonomy provided by the self-winding mechanism, screw-down winding crown for water resistance and serviceability. The round case measures 43mm in diameter with a solid screw-down case back and sapphire crystal glass ensuring scratch resistance and clarity. This model is rated at 1200 meters / 4000 feet of water depth resistance making it suitable for deep-sea diving.