Output voltage: 0.01-5.5V <br> Output current: 0.01-100mA<br> Rated speed: 100-6000 r / min<br> Material :plastic and metal<br> Fan diameter:10cm/3.94in<br>Packaging List：2pcs <br> Note :<br> Whether it is used as wind power or hydropower, it must support enough power to the fan rotation fast , then the leds can be bright.To rotate the fan ,you can blow the wind by your mouth , hair dryer or a fan. <br> This vertical wind turbine model, whether blown from the wind direction, can be powered by wind. The advantage is that it can be micro-started. The disadvantage is that the power generation effect is higher than that of the horizontal generator when the wind is high