Have more than one devices to be charge while on the road? Extend the connectivity of your single car cigarette chargeing port to 4! This socket charger comes with 3 extra cigarette charging port and guess what? A USB port! If you have a USB cable that charge your device (cellphone, PDA, MP3, GPS etc) when you use it with your PC, it works here! Just bring the USB cable of your devide, hook it with the USB port and your device is now charging! You do not have to buy an extra car charger specially for your device. This 4 socket charger let you charge up to 4 devices at the same time! Be it your GPS, cellphone, Bluetooth headset, PDA and other gadget that you may need on the road. (***USB Cables and car charger (for devices) is not included).