Powered with a 2200mah battery charger the spiral lite up backpack is a perfect mix of contemporary style and unique illuminating technologieswith an inner onoff tab you have the choice of 3 light functions ranging from solid bold light to continued ash you now control your style and can switch from the centre piece of the party to safely arriving home in just a single click combined with a removable inner charging pack you can now charge and listen to your usb devices on the move via