Windmill Generator Green Scien

Build this amazing and wind generator and learn about renewable energy. Watch the LED glow as it is powered by free energy from the wind. No batteries required! Contain 1 rotor, 1 front-housing with gear and rotor shaft installed, 1 back housing, 2 half screw caps, 1 toy motor with gear (generator), 1 motor cover, 8 small screws, 1 LED with wires and detailed instructions, including How it works: and fun facts. Windmill generator size at 13cm long.