Sunnytech Mini Solar Vertical Mendocino Motor Educational Model Science Physics Toy Home Office Desk Decor QZ08A

This is the most robust one, overall most interesting and will most likely last the longest.

The media could not be loaded. Spins faster than anticipated. Small but looks great. Seems to be well built, though fragile. Used a flashlight and the sun. My son likes putting Lego wheels and tires on top and balance. Stimulating.

Looked cool for the first day then dead

Great way to démocrate basic electro magnetic energy produced by photovoltaic technologies and the properties of copper wire windings. (AKA) ELECTRIC MOTOR. Surprised Tesla has not put solar panels on the roof of his vehicles.

The device is fully assembled and will work in bright light. I have it in a north facing window and the only light is reflected off a white garage. It spins away happily.

While running in direct sunlight, I can turn the base 180 degrees, and it will come to a complete stop, then start spinning in the opposite direction. If turned 90 degrees, it will come to a complete stop.A black mark on the base helps me optimize its best running positions.It's very well balanced and self starting.

This product is about the size of a pint of liquid, meaning very small. Not worth your money, buyer beware.

This is a really cool product - maybe a little too expensive but still fun to watch.