ALEKO WG450MW12V Wind Generator Turbine 3 Blades Green Energy 450W 12V Our wind turbine can be used with a power inverter, a charge controller, and a battery to store wind energy for use as electrical power An invaluable resource for areas with strong winds but no accessible electric power grid Rotation is smooth and quiet so it wont spoil your outdoor experience Starts generating power a 5 miles per hour of wind speed, so it doesnt need to be a storm or gale in order to provide power Output: 450 watts; operating voltage: 12 volts; Number of blades: 3