Patek Philippe Nautilus Rose Gold 40.5mm Brown Leather Strap 5980R 40.5mm 18K rose gold case, sapphire crystal back, screw-down crown, black-brown dial with gold applied hour markers with luminescent coating, self-winding caliber CH 28-520 C movement with 60-minute and 12-hour mono-counter chronograph and date, approximately 55 hours of power reserve, matt dark brown alligator strap with Nautilus fold-over buckle. Water-resistant up to 120 meters.