Ultra thin backup battery for mobile phones Works with any phone Never be stranded with a dead phone again Input: MicroUSB, Lightning slot Output: MicroUSB, USB I/O DC 5V = 1A Capacity: 3.7V/2500mAh(9.25WH) LED indicates when fully or partially charged, instructions on package Dimensions: 3.75" x 2.5" x 5/16" Diamente pattern of red pink, orange, yellow, and purple. Questions? Please ask!