Made of fine quality materials, structure, wear resistant and with stable performance. Adopts efficient motor and planetary gear transmission, with high working efficiency. Simple construction, easy operation. 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. Name: Wind Power Dynamo Output voltage: 12V, 24V Max. output current: 1500mA Max. load power: 20W Colour:black+silver Material:ABS+metal Package Contents: 1 x Wind Power Dynamo Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.