1 Durable, lightweight, ultra slim design 2 Electricity-saving function 3 Best price/ ... charger external battery bankHigh capacity and high compatibleDurable, lightweight, ultra slim designPowerful with long operation timeElectricity-saving functionUser friendly, long ... polymerInput: 5V 1AOutput: 5.3V 1ACompatible with:iPhone, iPad, PDA, PSP, GPSMP3/MP4, all digital devices charged via USB portOther ...