Ignite Imagination! 🔥 Simply fill, light, and watch it go—perfect for all ages! An ideal educational gift for budding scientists and curious minds. Experience a unique balance-style Stirling engine that stands out! Crafted from high-grade materials for long-lasting enjoyment. Achieves speeds of 1700 RPM for a thrilling visual display. Multicolor LED 95% alcohol fuel 1700 RPM speed The Sunnytech Hot Air Stirling Engine Motor is a captivating educational toy that combines physics with fun. Featuring a unique balance design, this engine operates on high-grade alcohol, generating electricity to power vibrant multicolor LEDs. With a robust construction and easy operation, it serves as an excellent gift for science enthusiasts of all ages.