About this item

• 【High Quality Material】：The physical perpetual motion machine is made of high quality wood and stainless steel, which is very strong, smooth and durable. You'll enjoy a very premium visual experience !
• 【Science Education with Fun and Education】:The interesting balance ball perpetual motion machine can be used as a device for imparting knowledge in the classroom, allowing children or students to experience the visual display of power and making children fall in love with physics! Analyze the shocking world of physics and science with your students, friends or family!
• 【Perfect Design】: The working principle, using the battery drive and the principle of gravity to make the metal balls constantly toss and fall. It took a lot of time to precise build, and testing. Amaze your friends and make them scratch their heads with this clever toy.