This external battery snaps inconspicuously onto the back of your iPhone 5， adding only a few millimeters of thickness， but more than doubling the battery running， it prioritizes consumption， pulling power pack first， maximizing the phone’s intermal battery. You can experience up to twoor more of uninterrupted iphone power， depending onyour usage                                    Features            High quality and durableProvides excellent continuous power sources to your deviceHigh energy density， long life batteryThis battery has an extra long life for all your battery powered devices                                                            Specifications            Battery Type    Lithium-ion Batterty    <br>Capacity    2200mAh    <br>Input    DC-5V / 800mA    <br>Output    DC-5V / 500mA    <br>Charge Time    6 hours    <br>Standy Time    Up to 300 hours    <br>Talk time    Up to 7 hours on 3G; Up to 16 hours on 2G    <br>Internat Use    Up to 7 hours on 3G; Up to 13 hours on Wi-Fi    <br>Audio Play    Up to 40 hours    <br>Video Play    Up to 13 hours    <br>Dimension    5.31" x 2.4" x 0.55" / 13.5 x 6.1 x 1.4cm    <br>Weight    6.14oz / 174g    <br>Color    Black &amp; Blue    <br>Compatibility    iPhone 5/5S    <br>                                                            Package Includes            1 x 2200mAh External Back Battery Case for iPhone 5/5S Black