With micro USB input port, convenient to connect Specifications: Capacity: 2,200mAhInput: 5 to 6V ... in five different stages, each 20%Multiple safety protections: built with short-circuit, over-charge, over-discharge and over-temperatureIntellectual design ... red and moreWith micro USB input port, convenient to connect10 pieces different tips for choose, compatible with 99% devices in market 2 ...