Package include:<br />1 x Generator<br />1 x User manual<br /><br />Specification:<br />Material: Metal<br />Color: Blue<br />Max power: 20W<br />Rotating speed: 2000rmp/min<br />Size(L*W*H): 125*80*85mm(4.92" X 3.15" X 3.34")<br />Voltage/Current: 3V/6.6