Hot Air Single Cylinder Stirling Engine Generator Physics Popular Science Production Invention Collection Toy Item Description Quantity of Items in Set:1 Warning:NO Gender:BOYS Model Number:K332 Vehicle:Cars Scale:1:48 Type:engine Theme:Vehicle Material:Metal Brand Name:goni Origin:Mainland China Recommend Age:12+y,18+ Certification:CE : Hot Air Single Cylinder Stirling Engine Generator Physics Popular Science Production Invention Collection Toy Instructions: 1: Turn the flywheel by hand to see if it is smooth. 2: Check whether the sliding parts are clean. 3: fill the alcohol lamp to less than two-thirds.(Add 95% and above alcohol) 4: Light the alcohol lamp on the front end of the test tube. Turn the flywheel after about 1 minute. The engine is spinning. The warm-up time with the generator is slightly longer. Precautions: Do not touch the baked test tube and the metal connected to it to avoid burns. Shipping list: Sterling Engine Model*1 Alcohol bottle*1 Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.