This USB Car Power Charger for the iPhone 4 will keep your iPhone charged while you're on the go. The small compact design has exactly what you need, a USB port and an indicator light, nothing more. Just plug this adapter into your car's cigarette lighter and a USB cable on the other end. Use with your existing iPhone USB cable or take advantage of our Exclusive Offer above and receive a discount. Make sure you never get stranded with a dead battery iPhone again with this USB 12V car charge