We purchased this as a gift to be sent to my husband's brother, who is into anything mechanical. He called immediately upon receipt/ set-up to thank us and rave about it. He was not only amazed at the mechanics of it, but he also said it was very well made. We got a text the next morning from his wife saying, 'you would think it was the best gift he'd ever received.'
Miniature power plant. You can use it to power up miniature model houses with LEDs just make sure that up use a resistor to limit the amperage draw. Output of the generator is around 6 volts.
Item was well packaged and was received in good order. Very well made and works as expected. A little expensive as a gift but the person who got it loves it.
The engine is very cool. The science behind it works.