Small 12v 24v electric generator No need for external power, water or wind can generate electricity, low noise and stable Smooth hand-cranked generator, no rust, no obvious scratch. Compact size, light weight, easy to use. Smooth hand-cranked generator, no rust, no obvious scratch. Compact size, light weight, easy to use. dynamotor can be used for backup lighting power supply, charging, testing, teaching, hydraulic generator, etc. Portable hand-cranked generator can be used as emergency power supply. It can be powered by human hand to supply electronic products. Motor output voltage: 5~30V. (unregulated, the voltage varies depending on the hand cranking speed) Color: As Shown Material: Metal Package Contents: 1 * power generator 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.