2nd Generation Audio FM Transmitter plus integrated Car Charger for the Sandisk Sansa Clip Plus with Gomadic TipExchange Technology
I purchased this product as the CD player in my car died.  I shopped around, read reviews for lots of different items but settled on this one because it was specific for the Sansa Clip.  I plugged it in, set the radio and this unit to 87.9, and it worked GREAT!  No static, background noise, or other interference.  It was worth every cent.