Ballon Bleu de Cartier watch, 33 mm, mechanical movement with automatic winding. Steel case, fluted crown set with a cabochon synthetic spinel, silver guilloch opaline dial. Blued-steel sword-shaped hands, sapphire crystal, black alligator leather strap, steel interchangeable deployant buckle. Thickness: 9.96 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).