I have owned several bluetooth units and this one is the best so far. The only real trouble that I have found is that it takes a little playing with to get the microphone to stay off of your face so that you can be heard clearly by the other person. I took the advice from another reviewer and placed a small peice of sticky felt onto the boom area and that put just enough space between the microphone boom and my face so that my speech is not muffled. Battery charge life is very good if not great. I talk a lot while driving and indoors and one full charge will last me for up to two days if not longer. All in all I would recommmend this unit to anyone who is in the market to purchase a new bluetooth.