ITEM NAME:High Quality 4 Inch Cooling Ventilation Fan USB Solar Powered Panel Iron Fa O8U5 High Quality 4 Inch Cooling Ventilation Fan USB Solar.The fan runs when plugged to the solar panel;And it can be used alone by plugged into computer USB port. When plugged to the solar panel, how the fan works depends on the sunlight. When the sunshine is not strong enough, the fan may work low or even does not work.
