The Ballon Bleu de Cartier watch. The watch is a self mechanical watch. It’s made out of 18k pink gold case, it also has a crown set with a blue cabochon-shaped sapphire, silvered guilloché lacquered opaline dial, Roman numerals, blued-steel sword-shaped hands, sapphire crystal. The band is made out of alligator skin. The case dimensions are: diameter: 36.6 mm, case thickness: 12.05 mm. Water-resistant to 3 bar.