1PC Mini Air Stirling Engine Motor Cupid's Arrow Educational Toy Kits Perfect Scientific Gifts

Features: The stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work. Perfect gift for your friends or families; also a super addition for home decor. The stirling engine model produced with quality material and fine workmanship to avoid rusting and prolong life. The assembly process is quick and easily. Great educational toy, classroom or laboratory experimental teaching aids, cultivate children's interest in physics. With stylish and delicate appearance, you can bring it to school, home, lab and more places.

Specifications: Model: QX-QBT-01 Material: Aluminum alloy&Glass Engine Size: 19 * 10.6 * 5.6cm / 7.48 * 4.17 * 2.2in Engine Weight: 300g / 10.58oz Package Size: 23 * 13 * 6cm / 9.1 * 5.12 * 2.36in Package Weight: 330g / 11.64oz

Package List: 1 * Stirling Engine 1 * Glass Alcohol Lamp (Without liquid) 1 * Alcohol Adding Bottle

Note: 1. Glass should not be exposed to water after being heated, or otherwise it will split. 2. If the alcohol is spill, please use wet cloth to put out the fire. 3. Children under 12-year-old should be accompanied by adult when using this product.