Portable hand-cranked emergency power supply that generates electricity and can be recharged. In the absence of municipal power and oil power generation in urgent need of electricity, you can use hand-cranked power generation to supply all kinds of electronic products. The faster the stirring speed, the higher the power, and the maximum power is about 20W. Features:Portable hand-cranked dynamotor, can be used as an emergency power supply.High power USB charging dynamotor.Solid structure, stable working performance and low noise.Compact size, light weight, easy to use.It can be used in field operations, field trips, natural disasters, survival training, emergency communications, long-term power outages, tourism, utility power. emergency, etc. Features:Colour: BlueMaterial: metalCorresponding voltage and current: 3V/ 6.6A, 5V/4A, 6V/ 3.3A, 9V/ 2.2A, 12V/ 1.6A, 15V/ 1.3AItem Size: 170*90*80mm/6.7*3.5*3.1inPackage size: 180 * 110 * 100mm / 7.1 * 4.3 * 3.9inPackage Weight: 800g/1.8lb Packing list:1 * Hand Crank Dynamotor