Rolex Oyster Perpetual Cosmograph Daytona 116518. 40mm Yellow Gold case, which is water resistant to 100 meters. Automatic Chronometer Chronograph movement. Featuring a white dial with yellow gold ringed white sub dials. Engraved yellow gold Tachymeter bezel. Tan croc strap with 18ct yellow gold folding clasp. Box and papers dated November 2011.