Patek Philippe Calatrava Watch - 5227G-01039 mm 18K white gold case, sapphire crystal back protected by a hinged dust cover, black lacquered dial with gold applied hour markers, caliber 324 S C self winding movement with date in an aperture and center sweep second hand, approximately 35 45 hours of power reserve, shiny black alligator strap with square scales, prong buckle. Water resistant to 30 m.