if your car doesn't have a direct plug-in for your cell phone or Ipod/MP3 player to play music, you will most likely need a FM Transmitter. All FM Transmitters serve the same base purpose, but some have some nifty features that can make the car audio experience easier. Belkin FM Transmitters provide a high quality product built to last. Belkin makes a variety of FM Transmitters such as their Tunebase and TrueFM models. Monster Audio also makes a high quality product, with its name speaking for itself. Monster iCarPlay FM Transmitters are great for your Iphone/Ipod/Ipad and the RadioPlay version is also great if you want to hookup your MP3 player or Cell Phone to your car's audio. Monster's iCarPlay FM Transmitters will also charge your media device, adding an extra convenience.
Great for when you're on the road and need to charge up. Belkin's TuneBass and TrueCast models for Iphone/Ipod/Ipad can charge your devices while on the go. There are many different brand in audio FM Transmitters out there, but it is best to avoid off brands as you risk losing audio and signal quality.