1. It can automatically adjust the current and voltage to achieve maximum power, delivering its fastest possible current up to 2.4A under direct sunlight 2. Portable and frame design fits for outdoor and indoor use 3. Transformation efficiency: 22%-25% 4. Solar Power: 20W 5. Output: 5V 2.1A(Max) 6. Compact Size: 306x 182 x 13mm 7. Opened Size: 592 x 306 x 3mm

http://olla.gr/allpowers-20w-5v-solar-phone-charger-dual-usb-output-portable-solar-panel/