I used to have a Motorola H700, but lost it. Bought a Jawbone replacement, which was a complete waste of $100 (I'm not reviewing Jawbone here so I won't go into details). I always liked the way the Motorola H700 fit on my ear so I shopped around 'til I found this one - the HS850. Looked like a good deal, and it was. People would tell me, with the H700, there would be delays in the transmission - they would say something but there would be a delay in my response. It was their biggest complaint. Once I had the HS850, I asked if they heard the delay, they said no. They tell me it sounds clear, and I hear them clearly. It IS a loose fit on the ear, but that's what I like. It goes on/off easy, so I don't have to leave it on my head. If I'm expecting a call, I may wear it until the call is completed. But if I'm not wearing it when the call comes in, it's easy enough to pick it up, turn it on, and put it on my ear. No fighting with snug ear loops and putting something IN my ear. NOTHING goes into the ear canal (yay!). And unlike the Jawbone, I can always tell when it's turned on or off - the mic boom is open, or it's closed. Very simple, easy to use. Love it. I prefer it over my $100 Jawbone ANY day.