Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great set of earphones

After three months of pretty constant use, I have little to complain about. If Sennheiser wanted to make them perfect, they could design it to use AA batteries instead of AAA batteries so the batteries would last longer. I have to change batteries about once a week, but using rechargeables has helped and its a snap to change them. I'd buy this set of headphones again, in a second.