This battery backup will keep your smartphone charged up when needed. With a 2,000 mAh Li-Ion Grade A battery and a 5V/1A output it will give you an additional 8 hours of talk time. Includes a USB to Micro USB connecting cable which can recharge the battery backup or be used to charge up devices with a Micro USB input like Android Smartphones from Samsung(R), Motorola(R), HTC(R), Nokia(R), and others. Complies with Prop 65. 0.83" H x 3.94" W x 0.87" L. Imprint area is 0.69" H x 2.00" L on USB ports left, On Top PanelCentered Right of LED. Please call for rush delivery availability or multi-colour/multi-location imprints.