Low-Temperature Stirling Engine Coffee Cup Engine Model Desktop Toy Gifts Type_Military Series the temperature is soft

the temperature is soft

A total of 90+ parts

high speed guarantee car's power

Weight: 420g / 0

Low-Temperature Stirling Engine Coffee Cup Engine Model Desktop Toy Gifts Type_Military Series the temperature is softLow Temperature Stirling Engine Coffee Cup Engine Model Desktop Toy Gifts Features:. LTD Stirling Engine: Mainly made of metal, the dreamy and eco friendly machine model is exquisite, aesthetic and rich in metallic luster.. Simple Operation&Easy Use: Put it on a water cup or coffee cup with a water temperature above 90 degrees Celsius, then turn the flywheel into a magical operation after half a minute of preheating for an enjoyable toy on your desk..