Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good headphones, but no call answer button

I bought these headphones and found that they had pretty good sound quality (although the bass was a little loud, as described in the CNET review), but returned them when I learned they did not have a call answer button like the headset that comes with the iPhone. I've seen some other iPhone compatible headsets coming out with that button on the microphone, so if you've come to appreciate it like me, you should look elsewhere.