The Jabra BT 800 has excellent sound quality, both for the listener and the user but, it is a large and bulky item that has difficulty staying firmly on the ear. So, when I am not using the phone, I usually take off the ear piece and drop it in my purse. It also has connectivity issues. It does not easily connect and disconnect with the phone. It would be much easier to use if the system had an on and off key which would allow the head piece to perform in this manner. It is a pain to go searching through my purse for my ear piece and I miss most calls. This would be eliminated with a simple on/off switch that would automitacally reconnect with the phone when placed in the on position.