Description: The portable generator generate electricity by hand shaking, it is an emergency power supply. In case of no electricity and oil power generation, it can be used for various electronic products to generate electricity by hand. Can be used in field operations, field investigations and rescue operations, natural disasters, survival training, emergency communication, long-term power shortage, tourism, emergency power use, etc.Features: 1. Power generation effortlessly, lightweight, mini metal casing.2. The generator speed is 2000 rpm, generating power is about 20W.3. The faster the shaking speed, the greater the generation power will be.5. The output voltage of the shaking generator must be greater than the set voltage for stable output.6. Hand-cranked generator, the faster the shaking speed, the greater the power will be, the maximum power is about 20w.Specification: Product size: about 8*9*17cm/3.15*3.54*6.69inMaterial: metal + plasticCorresponding voltage and current: 3v/6.6A, 5v/4A, 6v/3.3A, 9v/2.2A, 12v/1.6A, 15v/1.3APacking List:1*Hand-cranked Generator