Patek Philippe Aquanaut 5167A-001. 40mm steel case which is water resistant to 120 meters. Automatic mechanical movement, caliber 324 S C movement, 21K rotor with GenevaSeal. Embossed black degrading dial, white luminescent applied white gold Arabic numerals and hands with outer minute markers. Sapphire crystal see through case back. Rubber tropical strap with Patek Philippe double folding clasp. Box and papers dated August 2015.