What justifies Kensington's $89.99 price tag on this FM transmitter? The RDS transmission, that's what. RDS allows your transmitter to send digital info through the FM band along with the music. In this case, it sends Artist and song information to your car so you can see who's sings "Friday I'm in Love" (as if we'd ever forget). The only thing is, you'll need an RDS enabled car. Later model GMs usually have this.

RDS aside, the rest of the features are fairly standard. The charger switches off when your iPod's charged so your car battery doesn't get drained. Three station FM memory and stainless steel rounds out the package.

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RDS FM Transmitter/Car Charger for iPod® [Kensington via Playlist Magazine]