Powering up your electronic devices have never been simpler with Vivitar's new Power Bank. This power bank offers a unique design that features your favorite a wide variety of colors. Ready when you are, this 4000 mAh power back comes pre-charged and ready to use, delivering full charges to devices quickly. Portable, this power bank works perfectly with your iPhone, iPad and tablet, and various other devices. Best of all this product offers safety features that protect your electronics from over-charging and over heating.