This is a kind of quality wind generator, which uses efficient motor and planetary gear transmission, with high working efficiency. Easily lights up a bunch of LED lights by hand cranking. It adapts to make standby power, rechargeable, test, teaching, hydropower, etc. It can be applied to make standby power, rechargeable, test, teaching, hydropower device, and etc.. You can try. Features: Made of high quality material, firm structure, durable and with stable performance. Adopts efficient motor and planetary gear transmission, with high working efficiency. Simple construction, easy operation. Easily lights up a bunch of LED lights by turning by hand. It can be used as power for standby lighting, charging, experiment, teaching, hydroelectric generator. Can also be used to do a small experiment, can be used as a small capacity battery charging device, and so on.Specifications: Name: Wind Power Dynamo Material: ABS+metal Color: black+silver Output voltage: 12V, 24VMax. output current: 1500mAMax. power: 20WI Item size: 130 * 35 * 35mm / 5.12 * 1.38 * 1.38in Package size: 150 * 50 * Power / 5.91 * 1.97 * 1.97in Package weight: 310g / 10 ounce Dyna 93 ounce