Features:Rated power: 0.55W. Output voltage: 0.01V~ 5.5V. Output current: 0.01mA~100mA. Rated wind speed: 5 .5 m/s. Rated speed: 100 ~ 6000 rpm. This vertical wind turbine can work regardless of the wind direction. Compared with the traditional horizontal wind turbine, the vertical generator can work in light wind, but it can generate a little less electricity in strong wind. Good choice for teaching the physical principle of wind power generation. Small size, no noise, good demonstration effect, very good demonstration tool for DC wind power generation and DIY science experiments. About shlpping: All items will be shlpped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.