Description It is an excellent teaching tool to cultivate children's practical ability and interest. The generator is low-speed and non-blocking, with an efficiency of 98%. This kind of science model is a good teaching kit for wind power and water power generating. Features - Color: Assorted color. - Material: Plastic. - Size: 1.65X1.60X1.60cm/0.65X0.63X0.63 inch. - Output voltage: 0.01-15V. - Output current: 0.001-0.2A. - Wind speed: 3m/s. - Rated turning speed: 3000rpm. - Complete product: It needs yourself to assemble the wind turbine generator model kits, you can enjoy the fun of DIY. - Mini size: Small and very good for demonstration, can be used as a wind power teaching experiment. Great to cultivate students and kids' hands-on ability. - Good teaching tool of wind power generating. It can also be used to make science models. - It can be used as a model water-wind-light complementary grid-connected power generation system. - Can be used for wind generators as well as water generators.Package list: 1 x Wind Generator