What grade is Cartier blue balloon?

Cartier Blue Balloon belongs to the high-end series and has been recognized by many high-end people. Cartier Blue Balloon series watches have more complicated timing function than the classic outline, and the 3 o'clock and 6 o'clock marks on the black checkered dial can also present a more retro style. In terms of style and style, it can reach a more professional and high-end level. In addition to good aesthetics, it can also highlight more detailed tastes, so that the wearer can feel a stronger atmosphere and show his unique taste in various environments.