Cartier Ballon Bleu Watch, 36mm. Automatic mechanical movement. Steel case with a grooved crown adorned with a synthetic spinel cabochon. Silver guilloché opaline dial. Blued steel sword-shaped hands. Sapphire crystal. Black alligator strap with interchangeable steel deploying buckle. Case thickness: 12.1mm. Water resistant up to 3 bar (~30 meters).