Cartier Ballon Bleu watch, 42mm. Self-winding mechanical movement 1847 MC. Steel case, grooved crown with synthetic spinel cabochon, blue guilloché dial. Sword-shaped hands, sapphire crystal, blue alligator strap, interchangeable folding steel clasp. Date display at 3 o'clock. Thickness: 13mm. Waterproof up to 3 bar (~30 meters). Features: