The sound is good on my end, and a lot of people say it's better than just my cell phone on their end. It's comfortable and has good talk time too.But I have problems where it drops connection all the time while in standby. It also frequently will pick up a call, but have no sound. the phone has no sound either. So I have to disconnect the thing and call the person back without the headset. This can be a major pain.The other problem I have is that the conversation is very half duplex. I can talk, or listen. But due to the lag from the headset and the cellphone combined, there's lots of stepping on other people's words back and forth. I think this is due to the noise cancel feature.I would used this headset all the time if not for those problems. As it is, I only use it when wire and hands free is priority. Disappointing.