I've done a lot of research before buying this bluetooth headset for my new V3. I was reluctant to consider this one because of the negative comments I saw here. However, BF deals made me buy two headsets, one is this M2500 and one is Logitech Mobile Freedom(both the same price, cheapest I could find at present). I personally prefer Logitech since it's a more trustworthy brand name for me. But I was wrong about this one as soon as I began to use it.I like this headset very much. Just love it. Overall, I am very satisfied with this product. It is light weight, easy to wear and easy to use. Calls are very clear in both sides. No echo, no noise at all. So far no one can tell whether I use headset or not, no one complained. It works flawlessly with my Razr V3. I compared side by side with the Logitech one, both are almost the same quality as I can tell. But this M2500 has one more function: auto dial the last number while the Logitech one can not. The voice activation call also works fine through this headset. I highly recommend this headset, it's the best for this price!Pros:. Very good quality. Easy setup and easy to use. Crystal clear sound. Far distance. It works fine inside all over my house, at least 10 meters away;. Comfortable to wear, light weightedCons:. Battery life is a little short compared to others. On/Off button is a little hard to press