Features 1、Colorful ball perpetual motion toy is an exquisite decoration that can be placed in the home, school or office. 2、Electronic perpetual motion desk toy is also very suitable for those who love science or those who show the laws of physics in the science classroom. 3、Perpetual motion desk toy is very suitable for your outer space theme office or room decoration. This rotating model has several brightly colored balls that can rotate like a sky wheel. 4、Desktop toys allow you to be promoted or entertained while working. With something particularly interesting, you can stimulate creativity. 5、Perpetual motion is very interesting and useful for children who want to learn more about physics. This is an excellent educational and scientific device that can stimulate people's interest and exploration in physics. Specification Item Type: Perpetual Motion Desk Toy Material: Plastic + Metal Base Diameter: Approx. 10.8cm / 4.3in Height After Assembly: Approx. 23cm / 9.1in Purpose: Suitable for Gifts, Decorations, Etc. Battery: 4 AA Batteries (Delivered Without Batteries) Package List 1 x Base 2 x Bracket 1 x Round Frame 1 x USB Cable