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. With the convex curves of the case, guilloché dial, sword-shaped hands, and polished or satin-finish links of the bracelet...the Ballon Bleu watch by Cartier floats through the world of Cartier watchmaking. Ballon Bleu de Cartier watch, 42 mm. Mechanical movement with automatic winding, calibre 1847 MC. Steel case, fluted crown set with a synthetic cabochon-shaped spinel, black dial. Roman numeral, steel sword-shaped hands, sapphire crystal, black alligator-skin strap, interchangeable steel folding buckle, calendar aperture at 3 o'clock.