6.85mm waterproof Sapphire Crystal watch crown for Cartier Ballon Bleu watch parts

  • ● Material: solid steel +Sapphire Crystal
    ● Fit for: for Cartier Calibre  . 
    such as: W69012Z4;W69016Z4;W6900651;WE9009Z3...
    ● Feature: for original genuine watch
    ●Size: 6.85mm
Color
silvery
gold
rose