Portable Dual USB 8400mAh External Battery Charger Power Bank with Adapters Appoximately 3 times charge for your smart device Input:5V/1000mA Output: 5V/1A/2A With LED light -Power indication. Capacity Indicators: Shows remaining charge (100%, 75%, 50%, 25%) Capacity: 8400mAh Adapters including : Switch cable, mini usb, micro usb, iPhone4/4S, iPhone5