Floating like a balloon and as blue as the sapphire safely nestled in its side the ballon bleu de cartier watch adds a dash of elegance to male and female wrists alike roman numerals are guided on their path by a sapphire cabochon winding mechanism protected by an arc of precious metal with the convex curves of the case guilloch dial sword shaped hands and polished or satin finish links of the braceletthe ballon bleu de cartier watch floats through the world of cartier watchmakingstai