Patek Philippe Grand Complications Split Seconds Chronograph Pertetual Calendar Watch - 40.2mm Rose Gold Case - Silver Dial - Chocolate Strap - 5204R-00140. 2 mm 18K rose gold case, 14. 3 mm thick, interchangeable full back and sapphire crystal case back, silvery opaline dial with gold applied hour markers with luminescent coating, caliber CHR 29 535 PS Q manually wound movement with split seconds chronograph, instantaneous 30 minute counter, perpetual calendar, moon phases, day, month, leap year and day night indication in apertures, date by hand, seconds subdial, approximately 55 65 hours of power