Features Portable hand-cranked generator, can be used as an emergency power source, high-power USB rechargeable generator, strong power generation. Sturdy structure, low noise, stable working performance, small size, light weight and easy to use. The faster the crank speed, the greater the power, and the maximum power is about 20W. It can be used for field operations, field investigations, rescue operations, tourism, emergency power use, etc. Service guarantee ：100% brand new product, all refund if unsatisfied If you have any questions, please contact our professional customer service team. Features: Portable hand-cranked generator, can be used as an emergency power source, high-power USB rechargeable generator, strong power generation. Sturdy structure, low noise, stable working performance, small size, light weight and easy to use. The faster the crank speed, the greater the power, and the maximum power is about 20W. It can be used for field operations, field investigations, rescue operations, tourism, emergency power use, etc. 100% brand new product, all refund if unsatisfied If you have any questions, please contact our professional customer service team. Specification: Condition: 100% brand new Material: Metal Weight: 758g/26.7oz Power generation speed: 2000 RPM Power generation: about 20W Corresponding voltage and current: 3V/ 6.6A, 5V/4A, 6V/ 3.3A, 9V/ 2.2A, 12V/ 1.6A, 15V/ 1.3A Package List