Science Device Revolving Ball Perpetual Motion, Kinetic Art Asteroid Electronic Perpetual Motion Desk Toy Home Office Classroom Decoration

• Stress Relief Use This Electronic Swing Ball Desk Toy For Occasional Stress Relief And Relaxation When You Keep It On Your Desk At Home.
• Provides Fun This Classic Desk Toy Will Provide You With A Lot Of Fun And Is A Fun Device That Not Only Demonstrates Pendulum Motion, But Also Helps Show The Laws Of Momentum And Conservation Of Energy.
• Educational Science Kits It Is An Excellent Educational And Scientific Device To Stimulate Peoples Interest And Exploration Of Physics.

Specification: Item Type: Electronic Perpetual Motion Machine Material: Plastic frame, wrought iron Gross Weight: 310g / 10.9oz Product Principle: Let it swing by hand with external force, and then use the energy converted by the battery to continue swinging until the battery runs out of power Battery: The product does not contain batteries, you need to bring four AA batteries Package List: 1 x Electronic Perpetual Motion Machine 2 x Bracket 1 x Base 1 x USB Cable