LED power-indicator light The discreet LED light glows softly to let you know at a glance that the unit is powered. Works anywhere - great when you're not near a power source Even if you're not near a wall or car charger, you can recharge your device's battery with the convenient battery pack. The intelligent battery pack supplies power first, so you can remove the pack after use and still have a full battery on your device. 2 USB ports charge two devices simultaneously 2 USB ports charge two devices simultaneously Micro-USB cable included to connect and charge The included micro-USB to USB 2.0 cable is for use with mobile phones, digital cameras and other portable devices with a micro-USB connection. Carry it with you, keep it at your desk, or replace a cable you've lost so you're always able to connect and charge when you need to.