Ballon Bleu de Cartier watch, 36 mm, self-winding mechanical movement. 18K pink gold case, fluted crown set with a blue cabochon-shaped sapphire, silvered guilloché lacquered opaline dial, Roman numerals, blued-steel sword-shaped hands, sapphire crystal, alligator skin strap, 18K pink gold ardillon buckle. Case dimensions: diameter: 36.6 mm, case thickness: 12.05 mm. Water-resistant to 3 bar (approx. 30 meters/100 feet).