I have had this headset for a few years and it has been sitting in a box for about a year. Just pulled it out and paired it with my Droid X and it works fine. It was easy to pair and the sound is good. I have no problem with the comfort, since I only use it occasionally. Good inexpensive headset. I have owned 3 Plantronics headsets and I liked all of them. If I were buying a new headset I would probably get the 520.