Instruct: Classify the given Amazon review as either positive or negative.
Query: Head Phone Dead After 6 month of infrequent use

I Purchased Sennheiser wireless headphones because I thought they were of good quality. Sound quality was not so great but ok. There was small hiss at low volume but It was ok until I faced big jolt when one of the speaker stopped working only after 6 months. I used this headphone very less frequent and very properly.It is a real shock for me because I was getting a cheap RF headphone for $15 but I purchased this for quality. Now I am out of US and I cannot even claim warrenty.Total waste of Money. Really want to give negative Ratings. Not expected from Sennheiser.