Description:

Perpetual Motion Machine Toy: 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.
Stress Relief: This decoration helps promote feelings of calm, helps reduce stress/anxiety, and helps improve concentration.
Desktop Decoration: Great for home ornament, study or office desk table decor accessories, etc.
Perfect Gift: A nice gift for friends, kids, family. sleek desk toy for adults and children!
Plug and Play: Come with USB cable, plug and play, kids science educational toys.

Specification:

Material: Plastic

Size Chart:

150x100x150MM/5.91x3.94x5.91inch

Package Includes:

1x Perpetual Motion Machine Model Toy(with 5 steel ball)
1x USB Cable

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!