Just connect your USB to the supplied voltages regulator and place your wind in the wind streams ( high wind) to generate electricity Note: The positive and poles alternate Please find out which side is and which side is positive, otherwise it will burns out It can be used as wind power teaching experiment It is very suitable for training students and children hands-on ability This learning toy is good for curious children to understand the driving principle of the motor and how the propellers rotates to generate wind Small wind set It requires you to assemble your own wind, and you can enjoy the fun of at the same-time, Manufacturer: Zeizafa