Feature: 1. THREE DIMENSIONAL: Orbital celestial body rotation model is three dimensional, moving smoothly, swing from side to side, you can also learn the charm of science in this model. 2. WONDERFUL DECORATION: Celestial body orbit model is perfect for your office or outer space themed room. It will fascinate you and anyone else watching it for hours. 3. EASY INSTALLATION: Asteroid perpetual motion toy is easy to install and disassemble. A great gift for friends and family, the model can be easily installed even by those who have never known it. 4. FUN TOYS: Suitable as a teaching model, unleashes creativity and imagination, helps maintain focus, relieves stress, perfect gift for kids, helps understand magnets and physics. 5. EXHIBITION DISPLAY: Widely used in advertising display, children learning and education, teaching novelty toys, home, office, desktop decoration, business gifts, art and technology GIFs, birthday gifts, etc. Specification: Item Type: Perpetual Motion Toy Material: Plastic, Metal Product Size after Assembly: Approx. 22 x 14 x 25cm / 8.7 x 5.5 x 9.8in Battery: Base: 4 x 1.5V AA Battery (Not Included). Package List: 1 x Base6 x Accessories Note: Please allow slight error due to manual measurement. Thanks for your understanding.