Welcome to our store! 1、Simple operation, use 95% alcohol filled alcohol burners and light them, let the light burn the circular cylinder for about 60-100 seconds, then gently push the wheel and it will run madly and create the electricity. 2、The stirling engine is equipped with a bulb, which can be lighted by the electricity generated by the engine. 3、Made of brushed stainless steel and heavy glass material, surface sandblasting treatment, beautiful and durable. 4、It comes with a spare glass tube, an o-ring. If there is any damage, you can replace them quickly. 5、It has a wide range of applications for children's science projects, physical/mechanical learning, teacher demonstration props, birthday gifts for friends, family, children, etc.div Features: Simple operation, use 95% alcohol filled alcohol burners and light them, let the light burn the circular cylinder for about 60-100 seconds, then gently push the wheel and it will run madly and create the electricity. The stirling engine is equipped with a bulb, which can be lighted by the electricity generated by the engine. Made of brushed stainless steel and heavy glass material, surface sandblasting treatment, beautiful and durable. It comes with a spare glass tube, an o-ring. If there is any damage, you can replace them quickly. It has a wide range of applications for children's science projects, physical/mechanical learning, teacher demonstration props, birthday gifts for friends, family, children, etc. Specification: Condition: Brand New Item Type: Stirling Engine Material: Stainless Steel Color: Silver Power Cylinder Diameter: 12.5mm/0.49in Piston Stroke: 15mm/0.59in Package List: 1 x Stirling Engine 1 x Light Bulb (Random Color) 1 x Alcohol Bottle 1 x Sponge 1 x Small Light 1 x Rubber Band (Random Color) 1 x Quartz Tube