The Asteroid - Perpetual Motion is a piece of revolving art for your desk. This kinetic sculpture has several brightly colored metallic balls that rotate like a ferris wheel. It will keep you and anybody else who watches it mesmerized for hours. Once started- it keeps going and going until you stop it. This classic desk toy makes a great office decoration or executive gift. Pick one up for yourself or for anyone in need of a little desktop entertainment. **** * Measures 9*H x 6.5*W with 4* Diameter base** * Requires 1 9V battery (not included) ****