This is a kind of quality wind generator, which adopts efficient motor and planetary gear transmission, with high working efficiency. Easily lights up a bunch of LED lights by hand-cranking. It adapt to make standby lighting power supply, rechargeable, test, teaching, hydroelectric,etc. It can be applied to make standby lighting power supply, rechargeable, test, teaching, hydroelectric device, and etc.. You can have a try. Features: Made of fine quality materials, firm structure, wear resistant 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 hand-cranking. It can be used as standby lighting power supply, charging, experiment, teaching, hydroelectric generator. Also can be used to make a small experiment, can be used as a recharging device for small capacity battery, and so on. Specifications: Name: Wind Power Dynamo Material: ABS+metal Color: black+silver Output voltage: 12V, 24V Max. output current: 1500mA Max. load power: 20W Item size: 130 * 35 * 35mm / 5.12 * 1.38 * 1.38in Package size: 150 * 50 * 50mm / 5.91 * 1.97 * 1.97in Package weight: 310g / 10.93ounce