Wind Turbines -Mini Wind Turbine Highlights Generic Brand Mini Wind Turbine Description: Ideal for teaching the physical principle of direct current wind power generation. Plug and play, output terminals are easy to install. Small size, noiseless and vivid demonstration effect for your teaching process. DIY assembly, the wind turbine is packaged as a complete set. Great teaching tool to develop children's hands-on ability and stimulate their interests. Specification: Material: Plastic Motor Size: Approx. 15x16mm/5.90x6.30inch Fan Dia. : 26mm / 1.02 inch Fan color: gray Output voltage: 1-18V DC Output current: 0.002-0.5A Rated rotating speed: 3000 rpm Package includes: 1 x generator Note: The copper wire of the generator is very thin, please do not pull the small copper wire indiscriminately.