Material: metal + plasticInstall the battery, then push it slightly, it will movingStylish and innov..
Material: metal + plasticInstall the batteries, then push it slightly, it will movingStylish and inn..
Versatile: office decoration, business gifts, educational equipment, creative birthdays are also a g..
Allow children to turn interest and scientific knowledge into magnetism and energy.It is a special a..
Main Features:As a decoration on your office desk, gives you relax feelings, brings you a pleasant m..
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Newton's device usually consists of an unnecessary number of identical steel balls (7 is a common nu..
Swing lover perpetual motion toy home office desktop decoration ornamentsInstall batteries and push ..
An entertaining way to spend your free timeIt takes 4x batteries AAMaterial: Plastic and metal..
Newton's device usually consists of an odd number of identical steel spheres (7 is a common number) ..