Singapore

Note: USB charger and AA Batteries Can Not use at same time.
1. It will keep swinging until you stop it (turn off the power by 4 AA batteries or USB connection).
2. Children's educational physics science toys show the principles of conservation of momentum and energy.
3. It is not only a birthday gift or Christmas gift for your children, but also a great art for home and office accessories.
4. It also has more uses waiting for you to discover, such as increasing the number of steps, cell phone holders, etc.
5. Desk Toys - Rotating swing balance ball perpetual motion educational toys

Parameter:
Material: metal + plastic
Size: about 19*10.8cm/7.48*4.25in
Weight: about 250g

Function: 
1. Desk Toys - Rotating swing balance ball perpetual motion educational toys
2. Children's educational physical science toys show the principles of conservation of momentum and energy.
3. It also has more uses waiting for you to discover, such as increasing the number of steps, cell phone holders, etc.
Battery: 4 AA batteries (Note supplied), or USB connection power

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