1、Safety Design: This is a very interesting and imaginative toy, Stirling engine model design safety, alcohol lamp holder installed by the players themselves, to avoid the use of unskilled players fire safety hazards. 2、Fine Workmanship: The main body of Stirling engine motor model is made of premium aluminum alloy, CNC high speed machining, brushed metal surface, chamfered edges of the base plate and other details, exquisite and durable. 3、Easy To Operate: Fill the alcohol cylinder with 95% alcohol (recommended) and light it. Let the lamp burn the cylinder for about 20 seconds, then gently push the wheel and it will run. It can run continuously for more than 8 hours without damage. 4、Colorful LED: The Stirling engine is equipped with colorful LED. Due to the heat from the alcohol, the engine will run continuously and generate electricity. The power will run through the wires and drive the LED to emit different colors. 5、Educational: This hot air Stirling engine model demonstrates the principles of energy conversion in an attractive way, perfect for hobbyists and students interested in exploring physics concepts.