Stark Double Blades Windmill Car Mount Motor Solar Powered Toy Scientific Toy Version:Old Version you can manually adjust the

you can manually adjust the frequency and pulse width

Package Dimensions: 15 x 10 x 16cm

1 x Stirling Engine Model Toy

4V 1800mAh

Package Weight: 7050g

Stark Double Blades Windmill Car Mount Motor Solar Powered Toy Scientific Toy Version:Old Version you can manually adjust theStark Double Blades Windmill Car Mount Motor Solar Powered Toy Scientific ToyFeatures:. Creative Technology Ornaments: Solar powered windmill motor model, and the base come with car glue, which can be used for car mounted. The inside is clearly visible, which makes it easy to observe the principle. It is not affected by temperature changes and can be rotated throughout the year. Polysilicon solar panels. Made of metal, beautiful and durable.. Product