1. Material: wood+iron+plastic
2. Power supply: perpetual motion models use a AA battery (not included)
3. De-stress: a classic tabletop accessory, this action toy is a dynamic art, use it to pass the time
4. Wide range of applications: beautifully decorated, can be placed at home, school or office, ideal for placement in different places such as bedroom, office, etc.
5. Use the power to make the ball infinitely loop, which is fun and practical
6. Weight: about 300 grams
7. Dimensions: 17x17x10cm
