Which model has eight screws behind the Cartier blue balloon?

WE90035 1 ladies' diamond watch. Cartier blue balloon WE90035 1 ladies' diamond-encrusted watch, because the movement is invisible, it is enough to make the shell, and the bottom cover is fixed with 8 screws, and the lettering is very careful. The most popular Cartier blue balloon is the basic model, and the simple function does not affect the classic appearance of the blue balloon. The mirror of the watch adopts arched sapphire crystal, which will have layers of fisheye effect from the side.