Features 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. Small and very good for demonstration. A 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. Can work with light wind. 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. Specificatio n : Rated Power: 0.55 W Output Voltage: 0.01V~5.5 V Output Current: 0.01mA~100mA Diameter of Fan(installed): 100mm Quantity of Vane: 4 Rated Wind Speed: 5.5 m/s Rated Speed: 100~6000RPM Diameter of Motor: 24.5mm Height of Motor: 34.2mm Weight: 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