Patek Philippe Style No: 5236P-001 Patek Philippe Grand Complications - In-Line Perpetual Calendar - 41.3mm Platinum Case - Blue Dial

platinum case, 41.3mm thick, interchangeable solid and sapphire crystal back, blue dial with black-gradient, vertical satin finish, gold applied hour markers, Caliber 31-260 PS QL self-winding mechanical movement with in-line perpetual calendar, day, date, month, leap year and day/night indication in apertures, small seconds, approximately 38-48 hours of power reserve, shiny navy blue alligator leather strap with square scales, fold-over buckle. Water resistant to 30 m.