Custom logo or image will be 3D laser engraved inside of the crystal. Made out of super transparent K9 high quality crystal material. This elegant keychain is also enbeded with an LED light to illuminate your LOGO engraved.You could turn on or off the light by fastening or loosening the metal tip. Metal part is made out of stainless steel so that to ensure the durability and long longevity. The button battery is inchangerable. Packaging is in white box. Gift box packing is possible with surcharge. Larger crystal is also possible with surcharge. Also Available with Octagon and Heart shape Crystal.