1.The bottom of the model is made of highquality steel, and the bracket is made of aluminum alloy. The bottom of the bracket is wide, stable and solid, exquisite and atmospheric European style. The attractive color LED of the motor is installed Stirling engine with color LED. Due to the heat of alcohol, the engine will run wildly and generate electricity. The power supply will pass through the wire and drive the LED light to emit different colors. This is a very interesting and imaginative toy! 2.Well made and finely ground; The frame is finished with CNC, indicating that the sand blasting treatment is firm; Aluminum alloy flywheel; The connecting rod is made of stainless steel by laser cutting; The heating cylinder is made of customized thickened glass, and there is no pressure for longterm heating. The overall shape is exquisite, and the texture is combined with beauty! 3.Easy to operate and durable add 95% alcohol to the alcohol burner (we recommend using this fuel) and ignite it. Let the lamp burn on the cylinder at the round end for about 1 minute, and then gently move the wheel with your hand. It will run like charm. 4.Strong packaging glass tubes and bubble bags are packed separately to avoid damage during transportation. You can also get extra rewards there are spare glass tubes and three Orings. Please check the product pictures. If there is any damage, you can replace it quickly and easily.