Cartier Ballon Bleu watch, 36 mm, automatic mechanical movement. Rose gold 750/1000 case with a grooved crown adorned with a blue cabochon sapphire. Silver guilloché and lacquered opaline dial with Roman numerals and blued steel sword-shaped hands. Sapphire crystal glass. Alligator strap with rose gold ardillon buckle. Case size: diameter 36.6 mm, thickness 12.05 mm. Water resistant up to 3 bar (~30 meters).