djuiinostar low temperature stirling engine

?EASY START: just place on a mug of hot water and give it a spin and you're up and running; as long as enough temperature differential maintains, it will keep running like Forrest Gump. People will be shocked and surprised once this little engine start to work. It will definitely be a GREAT CONVERSATION PIECE on your desk. | ?WIDE APPLICATIONS: people bought it for kid's science project, physics/mechanics learning, demonstration on class, etc. It's a well-designed and crafted mechanical toy; great to display basic principle of external combustion engines; fantastic gift for people you love. Many people bought our machines as gift to families, teachers, friends, boyfriends and seldom will our machines failed to cheer them up! | ?MOST CLASSICAL STIRLING ENGINE: with elegant design and fine workmanship, this is a beautiful piece of art. Many people are satisfied with the fit and finish of our engine. | ?SAFE FOR KIDS: Complies with the applicable regulations and standards under CPSIA and any other acts enforced by CPSC; passed Toxic Elements Test/Flammability Test/Physical and Mechanical Test of ASTM-963 Standard Customer Safety Specification For Toy Safety. | ?????We provide free replacement if engine stop working within 365 days. We also provide spare parts free for all our products within 1 year. DjuiinoStar stands behind its products, buy with confidence!

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