Black stainless steel and sapphire customised Cartier Ballon Bleu 33mm from Mad Paris featuring round face, automatic movement, magnified date window, sapphire accents, screw-down crown, clasp fastening and This watch is a second-hand watch customized exclusively by MAD who is not an authorized reseller of the original manufacturer. The manufacturer's original guarantee is no longer valid, and the original technical properties may have changed and some parts may have been replaced..