L-type Stirling engine: The overall shape is novel and , the all-silver appearance is cool and eye-catching, the engine is equipped with a small generator, and it can also be connected to a load night light. It is full of metal mechanical and technological sense. It is an excellent and exquisite decorative model. Educational toys: When the machine is running, the USB cable is connected to the generator, which can light up the night light, giving space for hands-on operation, exploring science, enhancing imagination and creativity, and realizing your scientific and technological . Excellent workmanship: The machine is mainly made of stainless steel and aluminum alloy. The treatment is exquisite, rich in metallic luster, and the parts are matched with high precision. The bottom plate is provided with a place for placing an alcohol lamp. The machine runs smoothly and reliably. The combination of beauty. Instructions for use: The product itself has been assembled and can be operated and started at any time. Place the product on the water platform, then pour 95% alcohol into the alcohol lamp (capacity no more than 2/3), light the alcohol lamp, place it under the hot cylinder to preheat for , turn the flywheel by hand to help start. size:16 x 8 x 11cm Material:Aluminum alloy + stainless steel + quartz tube colour:Gold Silver Package Contents: 2 x Stirling Engine Model 2 x Small Night Light 2 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.