Instruct: Classify the given review into positive or negative sentiment.
Query: Terrible microphone, breaks down after 3 months

The microphone quality is terrible. In voice calls, people said they could barely hear me. I will admit that the headphones are very comfortable and the sound quality was good when I first received them. However, after 3 months of normal use, the right earphone started to go out and I had to constantly adjust the wire position to get it to work. A couple weeks later, the same thing happened to the left earphone, so I had to constantly adjust both wires to get any sound to come out, and the slightest movement would break the connection. Would not recommend.