The 3.1A Dual USB Car Charger allows you to quickly and safely charge two USB-powered devices simultaneously. Its dual-port interface features one 5V 2.1A USB charging port, ideal for ultra-fast charging of devices, and one 5V 1A USB charging port for iPhone, iPod and other USB-powered devices. This high-quality and ultra-compact charger works with any standard in-vehicle power outlet and features a translucent ring around the USB ports that glows blue to indicate power being passed through. It is a handy tool to keep your devices fully charged and ready to use while you are on the go.