Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Complete waste

I've owned this headset for about two hours. On the first plug-in and use, it worked tolerably well, though the output from my microphone (tested by calling Skype) was rather low). I've changed nothing setting-wise, but 60 minutes later, both the headphone and microphone quality are getting worse. Definitely a piece of junk. Very sorry I wasted money on it.