Cartier Rotonde de Cartier Astrotourbillon Skeleton Watch - 47 mm White Gold Case - W1556250

47mm 18K white gold case, 15.8mm thick, transparent back, beaded 18K white gold crown set with a blue sapphire cabochon, 18K white gold bezel, sapphire crystal, silver dial with roman numeral dial, caliber 9461 manual-winding movement with blued-steel sword-shaped hands, approximately 49 hours of power reserve, black alligator skin strap, double adjustable folding buckle. Water resistant to 3 bar.