Patek Philippe 37.2mm Perpetual Calendar Moonphase Grand Complication Watch Brown Dial 5140R

37.2mm 18K rose gold case, interchangeable full and sapphire crystal back, brown sunburst dial, self winding caliber 240 Q movement with day, date, month, moonphase, and am/pm indications, approximately 48 hour of power reserve, matt dark brown alligator strap with fold-over buckle. Water resistant to 30 meters.