YBEST Low Temperature Stirling Engine Model, γ-Type Gas Displacement Piston Type LTD Stirling Engine Metal Gear Transmission Heat Engine Model, Desk Decor Educatinal Toy - Silver - 1239WXPB99QLU17L

• LTD Stirling Engine: Made of aluminium alloy + brass full metal cnc fine engraving processing, all moving parts bearing rolling friction vice, γ type shifting gas piston type and gear drive structure design, base side do mirror design, exquisite and beautiful. Simple Operation, Easy to Use: Placed on the water temperature of 90 degrees Celsius or above the water cup or coffee cup, preheat half a minute after the fluctuation flywheel can magically run, it will be your desk can enjoy the toy. Durable and Continuous: The engine runs for at least 100 minutes at a time. It is not easily damaged and runs silently. It will run for a long time as long as the temperature difference is maintained, so it can be placed on your desk or desk for a long time. Wide Range of Applications: It is an affordable and fun product that can be used for science experiment projects, energy conversion and kinetic studies, teaching demonstrations and teaching aids. It is a fantastic toy to start a conversation with your friends and everyone will be curious to see how it works. Best Gift: It is a great birthday and Christmas gift that can be used to surprise friends, family and parents. It is an exquisite toy for many mechanical enthusiasts, model collectors and a great teaching tool for school teachers., Manufacturer: YBEST