It came quickly. Immediately earned. Excellent quality))
Interesting toy. The view is beautifully and neatly done.
I'll order another one. Cool model.
Great product. Super fast shipping. Track tracked. The motor is excellent, the quality is at the height. Very neatly packed. Shop and seller categorically recommend.
Really cool device. My students and I have been exploring the various forms of energy and wanted to see if we could convert radiant energy, solar energy, into heat energy, then mechanical energy. We were using the low temp. Sterling engine, also available by sunny tech. The students thought the engine was so cool we started to build one of our own. Great educational model to demonstrate the expansion and contraction of gasses. Thanks so much.