Portable Power Pack Capacity: 4000mAh. Input range (Mini USB): 5 to 6V DC, ... ): 5V DC, 1000mA CE,FCC,RoHS Multipurpose 4000mAh Portable Power Pack For Mobile Phone,Mp3,Mp4,GPSFeatures:Brand new & High quality ... convenient to charge for your portable devices, such as in business traveling, camping, exploration, meeting and other places without power to ...