Feature 1Dual USB port,can charge two electronic devices at the same time. 210-IN-1 charging line. It can charge multiple brands of mobile phones/ electronic devices at the same time, no longer have to worry about the phone being out of power when going out. 3It is waterproof, can be used in rainy days.High efficiency, conversion rate 19-24%. 4Solar panels are flexible for surface mounting. Easy to install and convenient to operation. 5Wide applications:Solar Panel Charger,Car Battery Charger,Solar Light,Solar Charger Bag,Solar Traffic Light,Portable Solar System,etc.Features: Dual USB port,can charge two electronic devices at the same time. 10-IN-1 charging line. It can charge multiple brands of mobile phones/ electronic devices at the same time, no longer have to worry about the phone being out of power when going out. It is waterproof, can be used in rainy days. High efficiency, conversion rate 19-24%. Solar panels are flexible for surface mounting. Easy to install and convenient to operation. Wide applications:Solar Panel Charger, Car Battery Charger, Solar Light, Solar Charger Bag, Solar Traffic Light, Portable Solar System, etc. Specifications: Color:Black Material:PET Maximum power (watt): 20W Open circuit voltage: 22V Max Operating Voltage: 18V Short circuit current: 1.11A Output: 18V/1.11A & 5V/2A Temperature coefficient of Isc:±0.05%°C Temperature coefficient of Voc:-0.33%°C Temperature coefficient of power:-0.23%°C NOCT(nominal operating cell temperature):45°C(±°C) Package Weight: 638g Package Size: 39 * 35 * 3cm Package list: 1 * ChargerPackage List1 * Charger