Ballon Bleu de Cartier watch, 36 mm. Mechanical movement with automatic winding, day/night. 18K rose gold (750/1000) case set with 54 brilliant-cut diamonds totaling 0.79 carats. Fluted 18K rose gold (750/1000) crown set with a sapphire cabochon. Mother-of-pearl dial with day and night indicator disc. Blued-steel sword-shaped hands. Sapphire crystal. Strap in gray sage alligator leather, 18K rose gold (750/1000) ardillon buckle. Case thickness: 12.11 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).