The USBDUO by IvySkin charges two devices at the same time, so you can listen on the longest road trips and your iPod or iPhone will have plenty of power when you arrive at your destination. Additionally, you can disconnect the USBDUO from the power adapter and charge virtually any USB device in the car – cell phones, cameras, and more.

Bring your own cable and Keep it Simple, Keep it Clean " BYOC  " 

The USBDUO has no cable permentaly attached to it, so you can plug and remove only the cable you need. This means no more clutter and tangled cables to distract you while you’re driving.