The Monster iCarPlay Wireless 300 lets you listen to your iPhone and iPod on your car s FM radio. It also charges while you play your music so you can listen for the longest road trips and have plenty of power left when you arrive. Even better the USB port on the adapter lets you charge virtually any USB device: cell phones, cameras, and more. You can even plug the iCarPlay into a computer USB port to listen to your iPod on an FM radio at home or at the office.