I bought this headset for two major reasons. First, it is a Plantronics. I have had several Plantronics devices and all have been exceptional. Secondly, the unique ear-clip design looked as though it would keep the ear piece in place comfortably.It is a very comfortable headset and I can wear this all day! Snug yet you can quickly forget its there. It will never pop out either.The sound quality to me was low, but acceptable. I have an LG phone, so I agree with the other reviewer that this might be an issue for folks with lesser amplified phones. But for me, it was fine.The problem I had was that the people on the other end kept complaining that my phone was cutting out, I was difficult to understand, etc. I suspect the noise cancelation circuitry is responsible for that. When people would complain, I would unhook the headset and things would improve. The issue was definitely the headset.I returned it and I'm looking for something else now. I recommend you avoid this way and be wary of other units with noise cancelation circuitry. Which whatever you buy, test it on yourself by leaving yourself a voice message using the headset and you will see how clear - or unclear - you really sound.