Retro Steam Engine: The vertical structure of the steam engine, the cylinder and the air distribution mechanism are easy to observe, the transparent cylinder design, the piston movement is unobstructed Safety Design: Equipped with a spherical boiler, safety valve, splash-proof exhaust tube, all-brass alcohol lamp, and fire-extinguishing gland to ensure safe operation Wide Range of Applications: This product is suitable as teaching aids and learning tools, doing scientific and technological experiments, and contributing to popular science knowledge DIY Fun: It has DIY modification space and output power, and supports the installation of LED lights and other loads Ideal Gift: Perfect for teaching, scientific experiments, or as a unique decoration. An excellent gift for steam enthusiasts and model builders