Sunnytech Hot Air Stirling Engine Colorful LED Flywheel Education Toy Electricity Power Generator Model (M14-03-L Black) ATTRACTIVE COLOURFUL LED WITH MOTOR INSTALLED-----The stirling engine equipped with a colorful LED. Because of the heat from high-grade alcohol, the engine will run madly and create the electricity. The power will go through the wire and drive the led light to emit different colors. It's really interesting and imaginative toy. EXTREMLY WELL-MADE----The product base is made of aluminum alloy plate, metal texture base highlights its texture and noble; The cylinder and the power piston are made of high hardness bearing steel, do not wear with high-speed ultra-long-running; Heating cylinder is made of quartz glass- the heat resistance is better than ordinary glass, service life is long & not easy to break. overall model shape refined, atmospheric, beautiful; EASY OPERATION & LONG LASTING----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 20 seconds, then give the wheel a gently push, it will run like a charm. It can run for 8+ hours continuous without any broken which test by one customer. STRONG PACKING----Glass tube is packaged separately with bubble bag to avoid damage during shipment. Easy to take off the package and put it back to the place. Wood base is bare and left unpainted. You can fly your imagination and stain it the color you prefer yourself or with kids, friends. PRIORITY GIFT OPTION FOR MANY APPLICATIONS----It is an amazing and fantastic product at this price. Its elegant gift package makes it spruce up and presentable. It has a wide range of application as, great gift for Kids' science project, Physical/mechanical learning, teachers Demo props on the class, birthday gift for friends, families, parents, kids, etc. Many of our customers come from school, colleague, etc.