... Led flashing crystal gift,flashing crystal gift,LED light crystal keychain,OEM and ODM according to your logo, shape, design. Led flashing crystal gift, ... according to your logo, shape, design.1) Function: twist the switch, the crystal will light up ;2) LED colors available: red, blue ... colors LED flashing;3) Customized images can be put in the crystal;4) Suitable for promotional items; 5) We can do ...