Dual USB sockets allow you to charge two devices at once. Use your existing USB cable to charge most USB devices, including, iPhone 3G, iPhone, iPod, MP3, Blackberry and more.
Use your cigarette-lighter outlet to charge any devices that can rely on USB for power! This adapter can charge 2 USB devices simultaneously. This adapter is a DC to DC power transfer device, it can provide for a 7.5W dc output with constant voltage source.
