What a disappointment!  Cheaply made. No one could understand me. Incoming audio was difficult to understand.  It kept beeping several different patterns every 20 to 30 seconds.  Customer service had no idea what this was, why it was doing it or how to stop it.  Although they send several different sizes of earplugs and ear holders, I couldn't find one that was comfortable or that would stay on my ear. This was the 4th or 5th headset I have tried and I just about gave up until I ran across the Motorola H710.  It does it all well and I don't even know I'm wearing it.  Sorry Jawbone.  I just don't understand all of the glowing reviews.