Steel Patek Philippe Aquanaut 5167A. Case diameter 40mm. 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. Black rubber strap with steel double folding clasp. Box and papers dated 2011. Service papers dated 2013. Our reference S20294.