Features:Small size, easy to carry.Power generator strongDynamo generator, the greater the speed of shaking the greater the power, the maximum power of about 20wA variety of interfaces, are free to chooseAnti-skid pads, easy to shake fixed.High-quality shaft, saving time and effortSpecification:Material: MetalColor: BlueMax power: 20WRotating speed: 2000rmp/minSize(L*W*H): 125*80*85mm(4.92 inch X 3.15 inch X 3.34 inch)Voltage/Current: 3V/6.6A, 5V/4A,6V/3.3A, 9V/2.2A,12V/1.6A, 15V/1.3APackage Contents:1 x Generator1 x User manualNote:Internal does not store powerBefore using the USB interface, be sure to set the voltage to 5VOnly the above package content, other products are not included.Note: Light 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.