Cartier Rotonde de Cartier Grande Complication Skeleton Watch - 45 mm Platinum Case - W155625145mm platinum case, 5. 49mm thick, sapphire back, beaded platinum crown set with a blue sapphire cabochon, sapphire crystal, silver dial with brass sunray brushed and blued steel apple shaped, baton or hammer shaped hands, caliber 9406 MC self winding movement with minute repeater and flying tourbillon, perpetual calendar and skeleton complication, approximately 50 hours of power reserve, black alligator skin strap, 18K white gold double adjustable