Cartier Style No: W1556253 Cartier Rotonde De Cartier Calendar Aperture and Power Reserve Limited Edition of 200 Watch

40mm 18K white gold case, 8.94mm thick, sapphire back, fluted crown with a cabochon sapphire, 18K white gold bezel, sapphire crystal, gray dial set with calendar aperture at 12 o'clock, caliber 9753 MC manual-winding movement with apple-shaped hands in blued steel, gray alligator skin strap, folding buckle. Water resistant to 3 bar.