Patek Philippe Chronograph Compliated Watch Model 5170J_001

39mm 18K yellow gold case, sapphire crystal back, silvery opaline dial with gold applied hour markers, manually wound caliber CH 29-535 PS movement with column-wheel chronograph, chronograph hand, subsidiary seconds, and 30-minute counter, approximately 65 hour of power reserve, leather strap with fold-over buckle. Water resistant to 30 meters.