Buying an FM Transmitter can be a crap shoot because each one may work differently in each area and each vehicle. This one worked perfectly in my 04 Mustang on Frequency 88.7, but when I tried to use the same frequency in an 08 Silverado, it was very static-y. But I just changed the frequency to 88.3 and it worked perfectly again. I really like this product, especially because I had the Griffin iTrip before and that thing sucked on all levels. The only problem I have with this product is that it does not charge th iPod like others do, but I can deal with that.