This is a great little bluetooth. I've had a few and each time wearing one of them, the caller on the other end complained that they could not hear me. I've worn this one for a few days now and no one has made a comment and I can hear them great.What most impressed me was the Voice Dialing. This is not a feature I use with my Blackberry so when the little voice in my ear asked me who I wanted to call and knew there were a couple of numbers to choose from, AND I actually didn't have to take the phone out of my purse to dial them, I thought then that the price I paid for this was well worth it! What was even better, the price on this was under 30.00!I highly recommend this bluetooth.. My only reason for giving it a 4 instead of 5 is the fit of the ear bud. I've read that there is a certain way to make it fit correctly but I've not read the manual yet to find out how...