Patek Philippe Men Grand Complications Watch - 5496R-00139. 5 mm platinum case, interchangeable full and sapphire crystal back, honey brown dial with gold applied hour markers, caliber 324 S QR self winding movement with perpetual calendar, retrograde date hand, day, date, month, leap year in apertures, center sweep second hand, moon phases, approximately 35 45 hours of power reserve, shiny brown alligator strap with square scales, fold over buckle. Water resistant to 30 m.