Rolex Oyster Perpetual Cosmograph Daytona 116518LN. 18ct Yellow Gold 40mm diameter case which is water resistant to 100 meters. This model uses the 4130 automatic chronometer movement. 72 hours power reserve. Functions; Center hour, minute and seconds hands, small seconds hand at 6 o’clock. Chronograph (center hand) accurate to within 1/8 of a second, 30-minute counter at 3 o’clock and 12-hour counter at 9 o’clock. Stop seconds for precise time setting. Black dial with Champagne sub dials and a black monobloc cerachrom bezel in ceramic with engraved tachymetric scale. Rubber Oysterflex strap with 18ct yellow gold folding Oysterlock safety clasp. Box and papers dated February 2018.