This extra thin watch with its smooth, round bezel is an unmistakable member of the Calatrava family and no other watch lends better expression to the true Patek Philippe style. The case is made of 18K rose gold and straps onto the hand using a black crocodile leather strap with tang buckle. The case back is transparent and made from Sapphire crystal. The watch features a self winding mechanical movement that displays hours, minutes, seconds and date (3 o'clock) on silver dial. Water resistant: 30 m. Screw-down crown, case diameter: 37 mm.