ENJOMOR Balance Hot Air Stirling Engine External Combustion Engine Model with LED Bulb Science & Technology Educational Toy Gift

ENJOMOR Balance Hot Air Stirling Engine External Combustion Engine Model with LED Bulb Science & Technology Educational Toy GiftFeatures:.Science & Education Toy: This is an educational and fun model using Stirling's principles, with innovative design and rigorous workmanship.The Stirling engine, which is an external combustion engine, only needs a alcohol lamp for heating and fast running. People will be amazed by the engine..Science & Technology Power Generation: You can observe the whole working process of the engine in a bright place. Not only can the engine only run at a high speed, but also the engine is capable of lighting the bulb. You will be completely fascinated by the light and the magic process of energy conversion if the engine is working in a dark environment. .Excellent Workmanship: The engine is made of zinc alloy, with plating surface for rich metallic luster and enhanced industrial texture. Features high-precision components for smooth and long-time runni