TekuOne iPhone 5 BC3 KiwiBird Rechargeable Extended Battery Boost Case for iPhone 5 (Black/Blue) Standard micro USB input, compatible with USB charger Compact, colorful, integrated design makes your iPhone 5 much more amazing Cut outs for all the iPhone 5's features and gives full protection Fashionable LED indicator shows power level anytime Efficiently avoid short-circuits, over-charging, over-discharging