Cartier Ballon Bleu de Cartier 36 MM Watch. 36.6 mm by 12 mm thick stainless steel case, stainless steel fluted crown set with a blue synthetic spinel cabochon, sapphire crystal, silver dial with Roman numerals and blued steel hands, caliber Cartier 690 quartz movement, white alligator strap. Water resistant to 30 meters.