Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lasted for 5 months, then, "cut out" repeatively

I bought these headphones because I work at an email/chat center and needed a durable set of phones that were comfortable on my ears, and blocked out sound. These worked almost perfectly for the first 5 months, could hear the bass and various treble scales with a song (Ive heard everything from classical to hip-hop. Was an original 4.5 rated product. Now.... 2 points, audio is constantly cutting out and "crackling". Keep this for light use only and you should be ok, a great inbetween or a back-up pair set. Please do not keep as a primary set.