Item Type: Magnetic Perpetual Motion Ornament Material: Plastic, Metal Product Size After Combination: Approx. 23x14x25cm / 9.1x5.5x9.8in Batteries: Base: 4 x 1.5V AA Batteries (Not Shipped With Batteries) Package List 1 x Base 6 x Accessories Please allow some error due to manual measurement. 1STABLE MOTION: With stable movement and left and right swaying, you can learn the fascination of science in this model. Even people who have never touched it before can easily install the model. 2STRESS RELIEF: Perpetual motion is built for creators, thinkers and people who unleash their inner creativity and imagination. Stay focused, relieve stress, or just relax during work time or brainstorming sessions. 3FUN AND USEFUL: Magnetic perpetual motion ornament is fun and useful for kids who want to learn more about magnets and physics, and is the perfect decoration for space themed parties. 4PERPETUAL MOTION DESK TOY: Electronic perpetual motion desk toy is perfect for your office or outer space themed room, keeping you and anyone else watching it captivated for hours. 5WIDELY USED: Widely used in advertising display, children learning education, teaching toys, home, office, desktop decoration, business gifts, art technology GIF, birthday gifts, Christmas gifts.