Ballon Bleu de Cartier 42Ballon Bleu de Cartier the endless pursuit of harmony Precious details, pure lines, and prefect proportions Beautifully housed in a 42mm 18K rose gold 36mm case with a traditional brown alligator leather strap Silvered guilloche and lacquered opaline dial with blued steel sword shaped hands and Roman numerals Driven by a self winding mechanical movement with a 37 hour power reserve A QUEST FOR HARMONY The Ballon Bleu de Cartier was Launched in 2007