The Mobilize Car Charger Dual USB is a durable charger and features two USB connectors. This allows you to charge multiple devices at a time. The USB0C Dual Car Charge cable is approximately 1 meter. Fo example, you can use your own USB cable to charge a tablet, navigation system, or other smartphone. By simply plugging a cable into both USB ports and connecting it to the desired devices, it starts charging automatically. The 2 ports together have a maximum output of 2.4A. During charging, a ring will light up to indicate that the charger is in use.