Using the power of four rapid charging solar panels, the Opteka SP-14W is your new best friend when you"re far from home. Travel with ease using the charger"s loops which attach to your backpack or tent. Unfold the device and expose the 14 watt mono-crystalline solar panels, each section putting out approximately 600mA under strong sunlight. USB charging port allows devices to recharge at a maximum output current of 2.2 Amps. No matter where you go, the Opteka Quad Panel Solar Charger will be ready for you. *Note: The SP-14W does not include any connecting cables. You will need to use the USB cable that came with your device Specifications Solar Panel Type: 4x mono-crystalline, output of 600mA each Input: 14-Watts Output: 5V standard USB port Operating Temperature: 32-95°F (0-35°C) Folded Dimensions: 6.5" X 9.5" X .5" (16.5cm X 24.1cm X 2.5cm) Expanded Dimensions: 34" X 9.5" X .5" (86.3cm X 24.1cm X 1.3cm) Weight: 25.7oz (730g)