Ballon Bleu de Cartier watch, 36 mm. Mechanical movement with automatic winding. Rose gold 750/1000 case set with 54 brilliant-cut diamonds totalling 0. 78 carats. Fluted crown decorated with a cabochon sapphire. Matte silvered stamped sunray dial set with 21 brilliant-cut diamonds totalling 0. 19 carats. Blued-steel sword-shaped hands. Sapphire crystal. Burgundy alligator-skin strap, rose gold 750/1000 ardillon buckle. Thickness: 12. 055 mm. Water-resistant to 3 bar (approx. 30 metres).Floating like a balloon and as blue as the cabochon safely nestled in its side, the Ballon Bleu watch by Cartier adds a dash of elegance to male and female wrists alike. Roman numerals are guided on their path by a deep blue winding mechanism. The convex curves of the case, guilloché dial, sword-shaped hands, and polished or satin-finish links of the bracelet ensure that the Ballon Bleu watch by Cartier floats within the world of Cartier watchmaking.