Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor quality!

These headsets were purchased for a research lab. Within about 6 months, 4 of the 8 headsets broke. For some, the mics stopped working. For others, the earphones. These headsets do not get abused or even used much more often than they would be for personal use. They were cheap, but they still should last longer than a few months.