content: This transmitter BLOWS away the Belkin (Model: F8Z439-P-BBY) product.the difference is night and day!! Tried the Belkin and could not get a good clean transmission on any freq. Also the volume was so low, even after turning up the source device to max and the car stereo to almost max!Then I tried the monster....man am I glad I did! Get the Monster, you won't be sorry.