Revolving Gadget Perpetual Physics Science Teaching Aids

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Description:

Classic Executive Desk Toy - Revolving Balls Perpetual Educational Toys.
Powered by 4pcs AA batteries or USB，move lightly, it would keep going on rocking around until you stop it or power off. (Batteries are not included)
Kids educational physics science toy, the principles of Conservation of Momentum and Energy.
Great artworks for home or office desktop ornaments, also birthday gift for your children.
Material: Metal,

Specification:

Size (L x W x H): Approx 15 x 10 x 20cm/ 5.90 x 3.93 x 7.87 inch

USB Length Approx 100cm/ 39.37 inch

Color:

Package Includes:

1 Set Perpetual Motion Toy (Batteries Are Not Included)

:

Due to the manual measurement, please allow 1-2mm differences in size
Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand

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