Production Description Specification: Material: Metal Color: Blue Max power: 20W Rotating speed: 2000rmp/min Size(L*W*H): 125*80*85mm(4.92" X 3.15" X 3.34") Voltage/Current: 3V/6.6A, 5V/4A,6V/3.3A, 9V/2.2A,12V/1.6A, 15V/1.3A Features: -Small size, easy to carry -Power generator strong -Dynamo generator, the greater the speed of shaking the greater the power, the maximum power of about 20w -A variety of interfaces, are free to choose -Anti-skid pads, easy to shake fixed -High-quality shaft, saving time and effort Note: -Internal does not store power -Before using the USB interface, be sure to set the voltage to 5V Package include: 1 x Generator