Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Piece of junk

This device seems to be cool, but it is really useless. Very low power, noisy, and requires you to install lots of "audio files" for programming the stations. These audio files send data to the transmitter and reprograms it to the desired FM frequency you want to tune in your car. What happens is that if you put your device on shuffle mode, you do the math... Workaround is to delete these audio files, but you then lose the capability of tuning to a different frequency, in case you travel.There are other devices (Monster is great) that do the job seamlessly. Besides, this device is dedicated to the iPod mini and will not work on any other model. Other devices do a much better job in this case, especially the ones that use the universal iPod connector to interact with the iPod.