Prior to buying this headset I used a Plantronics Discovery, which had great sound quality, but frequently lost the BT connection. This BT500 by Jabra is well-built and pairs easily but callers frequently say that the sound is muffled, especially when there is some background noise. I hear the other caller well with this unit and the clarity for the other party improves if I make an effort to speak clearly and at a normal conversational volume.