Features Small and very good for demonstration.Can work with light wind. Good teaching tool of wind power generating. Can also be used to make science model. Can work no matter from which direction the wind comes. We want to bring you the best product experience. If you have any pre-sale or post-sale questions, please feel free to contact us. We are committed to bringing our customers the best shopping experience and will solve your problems in a timely manner. Description:This vertical wind generator can work no matter from which direction the wind comes. Compared with traditional horizontal wind generator, the vertical generator can work with light wind, but it may generate little less amount of electricity when there is strong wind. Specification:Rated Power: 0.55 W Output Voltage: 0.01V~5.5 VOutput Current: 0.01mA~100mADiameter of Fan(installed): 100mm Quantity of Vane: 4 Rated Wind Speed: 5.5 m/sRated Speed: 100~6000RPMDiameter of Motor: 24.5mm Height of Motor: 34.2mmWeight: 60 g(approx.) Package includes: 1 x Vertical Wind Generator Note: 1. Please allow 1-3 mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List