I work for a call center and i'm on the phones 6-9hrs a day taking calls. I've had this for almost a 1 year now and have had issues with it. First the headset is WAY to loud, even turned down to the lowest setting. It puts you in position where you have to whisper into it and causes your voice clarity to drop. Not letting you to speak normal and let yourself pronounce your words correctly and loudly enough. Which is important in my profession...Also, the mute button stopped working after a month. So any time your on a call and need to clear your throat, sneeze, drink water, etc... I hit the mute button and the customer can still hear you! IT'S EMBARRASSING. It works sometimes and the other times it does not. I've read other reviews with the same problem.I will not purchase this phone again and would recommend staying away from it.