This is the SmithsonianŽ Electronic Crystal Growing Kit by NSI International For ages 10 years and up.
Features: * Grow (10) amazing crystal formations. * Watch as the electronic base makes the crystals change colors. * Learn about crystalline habitata and crystal structures. * Includes color poster (35" x 23"). * Includes complete instructions. * The color changing base comes with the required 3V battery.
...more about the NSI Crystal Growing