Cartier Cle de Cartier Automatic Skeleton Gem-Set Watch - Palladium Diamond Case - HPI01057palladium case set with 449 brilliant cut diamonds totaling 4. 11 carats, 5. 66 mm thick, sapphire crystal back, palladium 950 key crown set with 28 brilliant cut diamonds totaling 0. 14 carats, sapphire crystal, caliber 9621 MC self winding mechanical movement, approximately 48 hours of power reserve, 18K white gold double adjustable folding buckle.