Ballon Bleu de Cartier - constantly seeking harmony Striking the perfect balance between line and volume Presented in a 28mm steel case with a matching bracelet Silver opaline dial with blued-steel sword-shaped hands Powered by reliable Quartz movement A NEW VISION OF ROUNDNESS A watch constantly seeking harmony, the Ballon Bleu de Cartier was launched in 2007 and quickly became a Cartier icon. Created from a new vision of roundness, its double convex silhouette strikes the perfect balance between line and volume. Each model in the collection features a blue sapphire cabochon set within the seamlessly integrated winding crown, creating the appearance of a floating blue balloon, which gives the collection its name. The crown cap sits under a metal hoop at three o'clock, protecting the blue bubble. PERSONALITY AND COMFORT Subverting watchmaking rules, this charming timepiece sits in a 28mm steel case, with a unique convex pebble shape. Manufactured in 15 stages, the silvered opaline dial