Specifications Name Perpetual Motion Machine ToyMaterial PC Middle Ring Iron Wire MagnetismSize About 23 5 X 10 5cm 9 25 X 4 13 InchesUsb Battery Dual Purpose It Can Be Powered By Four Aa Batteries Alone Or By Usb Usb And Battery Cannot Be Used At The Same Time The Base Will Burn Out Features 1 It features a USB battery dual purpose system Use USB power when near a power source or switch to battery mode for true wireless display This versatile toy perfectly blends design and functionality providing good flexibility for your work 2 This perpetual motion machine desktop toy with its rotating magnetic rocker and intricate motion artwork is a stunning representation of the beauty of the universe perfect as an elegant and eye catching focal point in any space 3 Simulate the perpetual motion machine of celestial bodies and enhance educational exploration with this desktop toy Its interactive features provide an engaging and fun way to understand complex astronomical concepts making it an ideal educational tool for adults and children 4 The elegantly designed perpetual motion machine desktop toy has carefully crafted curves rotations and swings demonstrating ultra precision engineering structures and smooth operations that will enhance your work environment 5 Bring the movement of celestial bodies to life with our dynamic desktop toys for kids With its smooth operation and rotating magnetic rocker this toy showcases the Earth s perpetual motion machine