Power Bank,Romoss&reg; Bater&iacute;a externa port&aacute;til LCD Sense 4 plus 10400mAh Mobile Phone Charger,Fast Charging for iPhone iPad Samsung HTC Huawei and More Fast Charging And Efficient Output: fast charging of only 6.5 hours, power output conversion rate improved to 85% ensuring 4 full charges on iPhone 5s Dual USB and Charge while Discharge: charge 2 mobile devices at the same time and can be charged and discharge simultaneously Compatible and Smart: automatically adjusts output based on the connected device, compatible with all popular smartphones and tablets Compact and Enduring: simple and elegant look with portable size, dormant when unused to avoid any power waste Display Screen: LCD indication for Battery Status