Here is a smart USB flash drive that serves as a streaming, storage, and battery for your devices. The BWA U+ works for up to 12 hours on battery. It streams music, movies, and documents. It has a 4500 mAh battery that you can use to charge your devices. A selfie shutter function is also available.
U+ lets you access your files with or without an Internet connection. It is compatible with iOS and Android devices.[where to get it]