Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 4 for sound, 0 for durability

I've had four pairs of these headphones; each pair has snapped at the earpiece. The first two pairs lasted a good long while before breaking but recently I broke two pairs in two weeks. (Fortunately I had a replacement plan so the second was free.) The foldability isn't worth it. Go for the much cheaper and far more durable ones that don't fold.