Promate Couple 5200mAh Split Heart Universal Back up Battery – Capacity 5200mAh total (2600mAh per half), Input 5V/600mA, Output 5V/1A, Special Edition split heart design made of ABS plastic, Compatible with all tablets, smartphones, and USB 1A powered devices, Includes Micro-USB cable and user guide, Features auto power on/off when not in use, Over-current, over-voltage, over-charge, and short-circuit protection, Packaged in retail box, Warranty 1 year limited