L-type Stirling engine: The overall shape is novel and unique, 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 and exquisite decorative . 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 and creativity, and realizing your scientific and technological dreams. workmanship: The machine is mainly made of stainless steel and aluminum alloy. The surface treatment is exquisite, in metallic luster, and the parts are matched with high . The bottom plate is provided with a place for placing an alcohol lamp. The machine runs smoothly and reliably. The perfect combination of beauty. Instructions for : The product itself has been assembled and can be operated and started at any time. Place the product on the water , 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 . size:16 x 8 x 11cm Material:Aluminum alloy + stainless steel + quartz tube colour:Gold Silver Package Contents: 1 x Stirling Engine 1 x Small Night Light 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.