OEM and ODM according to your logo, shape, design, printing and so on 1) Function: twist the switch, the crystal will light up2) LED colors available: red, blue, green, white or RGB 3 colors LED flashing3) Customized images can be put in the crystal4) Suitable for promotional items5) We can do OEM and ODM according to your logo, shape, design, printing and so on. LED/flashing crystal crafts