20W Emergency Hand Crank Dynamotor High Power Charger Portable USB Charging Hand Crank Generator Outdoor Camping Survival ,Portable

-Rotating speed: 2000rmp/min -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