It is a kind of quality wind turbine, which adopts efficient motor and planetary gear transmission, with high working efficiency. Easily turn on a bunch of LED lights using a crank. It is suitable for making emergency lighting power supply, rechargeable, test, teaching, hydroelectric, etc. It can be applied to make emergency lighting power supply, rechargeable, test, teaching, hydroelectric device, etc. You can have a try. Features: Made of premium 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 turn on a bunch of hand-cranked LED lights. It can be used as emergency lighting power supply, charging, experiment, teaching, hydroelectric generator. Can also be used to do a small experiment, can be used as a small capacity battery charger, etc. br/> Features: Name: Wind Power Dynamo< br/> Material: ABS + Metal Color: Black + Silver Voltage Output : 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 /10.93ounces Packing List: 1 * Wind Dynamo