Purple Low Temperature Difference Stirling Engine Coffee Cup Engine Brand_SCALECLUB and cultivate innovation ability and

and cultivate innovation ability and creativity

Realistic Working Model: The car can run realistically

and high-end

Use Fuel: methanol fuel

Purple Low Temperature Difference Stirling Engine Coffee Cup Engine Brand_SCALECLUB and cultivate innovation ability andPurple Low Temperature Difference Stirling Engine Coffee Cup EngineFeatures:. LTD Stirling Engine: A high quality marvelous model with exquisite craftsmanship, featuring a mirrored stainless steel base and a golden flywheel for an elegant appearance.. Easy Operation: Place it on a cup with a temperature above 90C, and the flywheel starts spinning after half a minute, becoming your delightful desk companion.. Durable & Continuous Operation: With the