The Ful Powerbag Black Backpack is a durable and stylish accessory. The built-in battery system charges the average smartphone twice and includes Apple, Micro-USB and Mini-USB connectors and a USB port. Charge literally hundreds of devices including smartphones, eReaders and many tablets. Tablets must be charged with their own USB cable through Powerbag's on-board USB port. Made ofwater-resistant nylon material, this solid black backpack features padded partitions to keep your devices safe and secure. With its compact design and sturdy construction, this backpack is perfect for on-the-go use while traveling or working on the move. The brand, ful, ensures quality and reliability in protecting your valuable tech devices. This is brand new in mint condition, but the battery has never been tested.