Ballon Bleu de Cartier watch, 36 mm, mechanical movement with automatic winding. Yellow gold 750/1000 case set with 54 brilliant-cut diamonds totaling 0.79 carat. Fluted crown set with a cabochon sapphire. Silver dial with sunray-effect. Blued-steel sword-shaped hands. Sapphire crystal. Yellow gold 750/1000 interchangeable bracelet. Thickness: 12.1 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).