Easy to assemble.
Dual Mode (run it by battery or remove batteries, generate electricity by putting it in the front of fast blowing wind like a fan), the wings of the fan moves and the LED in the house lighten up.
A windmill converts wind energy into rotational energy by means of its blades.
The basic principle is to convert the kinetic energy of wind into mechanical energy which is used to rotate the turbine of an electrical generator to produce electricity.
Assembly Sheet and Activity Sheet