Instruct: Classify Amazon reviews into positive or negative sentiment
Query: monster ifreeplay cordless headphones for shuffle

I have owned and used my headset for over a year now and have to say that it was well worth the investment. As for people saying that they don't stay on properly, I can only say that they are not hanging them over the ear as intended. I have got some crackling in the speakers from time to time, but that is my only complaint about the sound quality.