Cartier, model: W6920052, Ballon Bleu Chronograph watch, 44mm large case diameter. (Aftermarket diamonds) Set with high-quality bezel diamonds, shiny and exquisite black dial Roman hour markers, with chronograph function, automatic mechanical movement, classic Ballon Bleu round crown, black alligator leather strap, a versatile choice for elegant men's formal business wear. The full set of coverage for 2025 has been extended to 2033.