Great sound quality in the car. People hear me OK even with the music in the car (not blasting), and when the windows are slightly open.It's a little larger the i expected but comfortable even over glasses. (yes don't forget that your glasses will interfere with most over-the-ear setups.Power button is hard to press, because it doesn't go in, it kinda shifts to the side and you do not get a nice click response(audio or otherwise).