Instruct: Classify a review into positive or negative sentiment.
Query: enjoy ... while they last

I can't argue with the sound quality (although you definitely hear contact with the wire -- probably unavoidable with a light-weight wire).More troubling is that they simply don't survive normal use. The wire is too light-weight & didn't last even a year before one ear starting cutting out. I nearly always placed the headphones back in their carrying case after use. They're simply too delicate to be this expensive.