Pros: Small, lightweight, easy to use.
Cons: Loss of sound quality over short distances.
The bottom line: Good for the non-business use, such as cars as it is now illegal where I live to talk on the phone without a hands free set.
I got this as a Christmas present this year and have had a few weeks to work with it. The shape and size of the piece allows for it to fit comfortably on my ear, I have had it on for more then an hour at a time, and its overall low weight makes it easy to forget about. It works well and is a very simple and easy to use design. Simple call button along with volume up and down. The overall volume level it produces allows for easy talking but is not something to listen to high quality audio over. Some of the problems I have had with it is with longer hair it is much more difficult to get the set over the ear lobe and into a stable position. Also its ability to transmit to the phone back and receive seems to be very weak compared to some I have seen, it starts going bad within just a few meters. Also, while I have never heard myself, others seem to sometimes have some difficulty with hearing what I am saying forcing me to speak louder to allow for the microphone to pick up what I am saying. Overall it does seem to do the job, I just dislike having to talk louder, but it is nice that it is charged via mini-usb.