Perpetual Motion Machine, Gadget Swing Birthday Gifts Creative Ornament for Office Decoration

Description:

- Excellent educational science gadget. Not only stimulate people's interest and exploration in physics, but also shows the laws of conservation of momentum and energy.

- . Made of plastic, it is and smooth to touch,durable.

- Decor.Great for home ornament, study or office desk table decor accessories, etc.

- Gifts:A nice gift for friends, kids, family. sleek desk toy for adults and children!

- Rechargable:Come with USB cable, push it by hands and it will use the USB powered to keep on swinging. Size Chart: Size:Approx.220x110x185mm/8.66x4.33x7.28inch

Package Includes: 1 Piece Perpetual Motion Toy 1 Piece USB Cable 5 Pieces Steel Balls

Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on line shopping!