Instruct: Classify the given review into positive or negative sentiment.
Query: Poor build quality

Great sound, but the build quality is just not there. On a recent trip to Europe, the left bud completely fell apart and the leads became disconnected from the bass driver. They are only two months old and I always keep them in the case! I had to solder it back together and then super glue the bud back together. Since then I've also had to superglue the right bud as well. Also, the cable sheath is fraying over one bud lead, revealing the fine speaker wire underneath. I don't expect these phones to last much longer which is too bad. They are great sounding and comfortable, but unfortunately they seem to have cut some important corners. Be warned!