Avoid having a low battery on your smartphone, MP3 player, and even your tablet with one external battery that can power and charge these devices and more. The PowerPort Wave6600 is the most powerful Wave solution for power on-the-go. Equipped with 2 USB ports and a total high output of 3.1A, this unit extends the life of most devices 2-3 times more than their normal battery life. Whether you are a business professional, student, or gadget geek, everyone can benefit from the convenience of the sleek PowerPort Wave6600.