Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great idea, bad execution

Multiple problems with these headphones. I use them for voice tracks so I have no comment on sound quality. There is no display so there is no way to know what is happening with the system when you press a button. There is no repeat function. The headphones will only play one track over and over again -- I can't forward to another track. I'm very displeased and am going to return them.