multiple function solar backpack with 6.5w solar panel charger usb ports for lapelectronic devices

a high performance detachable solar panel provides charging power for batteries for diverse electronic appliances on every trip. ideal for charging smart phones, tablets, ipods, speakers, mp-3 players, etc. when there is enough sunlight. these solar cells have an efficiency of 22 % and thus get more out of the sun rays than standard cells. the solar cells are protected by a scratch resistant surface. sewn into a pvc cover with clips for optimal fastening to the backpack