Features: ★ Well-made Stirling Engine Mode: The whole body is made of Zinc alloy and stainless steel, and original oaken base with 4 anti-skid pads at the bottom of model machine. The fly wheel is made of metal and epoxy process, to enhance the industrial texture. ★ Attractive LED Light: The Stirling engine equipped with a LED. As the power will go through the wire and drive the LED light to lit. ★ Superior Performance: When the model keeps rotating, the speed is high, the performance is stable, and the rotation can be maintained for a long time. Low noise, low pollution and low operating costs. ★ Great Educational Toy: The glass tube and glass alcohol lamp, easy to watch piston movement directly. The best choice gift for students, teachers, children, friends and colleagues. ★ Easy to Operate: Fill the alcohol burner with your 95% alcohol (we recommend this fuel) and light it. Let the light burn the round ended cylinder for about 30 seconds, then give the wheel a gentle push.