I have had this headset for two months and it is great. I can hear the person I am speaking to clearly and that person can hear me clearly. I am using it with a Sony Ericsson T637, using the headset with the phone's voice control is great; I rarely have to touch the phone.The headset is very comfortable and even fits over my ear when I wear my glasses. I give it five stars. The only time I have gotten a complaint from someone I was talking to was because I had the headset volume too high, the other person said that they echoed. I think this is due to the speaker being only a couple of inches away from the microphone. I simple turned the volume down by one click and it was fine.