I bought this at the smallest "top of the line" Bluetooth headset, not have used a BT headset. Before. While it was comfortable and I could easily navigate the features, I had two complaints that made it impractical and useless.1) My primary complaint is that it does not stay synced with the V3. I am not sure if this is an issue with other phones, but I will say that with my wife's v551, there seems to be no problem. When the headset is not engaged in a call, it disconnects and reconnects every minute or so, giving me the annoying static in my ear every time it connects. I didn't think this should be a problem, since both products are made by Motorola, but even with tech support the issue could not be resolved. This is why I say in the title that it is not good for the V3. It might be fine with other phones, as my wife's v551 seemed fine.2) The boom is too close to the ear speaker. I was told by many people with whom I was on the phone that they could hear themselves "echo". I could resolve this by turning down the earpiece speaker. That is fine while I am at home in my office, but if I was in the car, where there is more ambient noise, turning it down led to ME not being able to hear clearly. This is a problem that I had when I tried it with my wife's phone as well... so this is not really a "fixable" problem, as far as I can see.Both of these conditions were eliminated by purchasing the Jabra BT-250. While it is not as small and convenient to carry, it retained all the great features of the HS850, without the annoying problems listed above.Again, this may not be the case with other phones, but I have to give a VERY negative report with the Motorola V3