I've had this thing for nine months. During that time, I quite enjoyed it. I particularly liked the flip-mic and the idea of flipping open (rather than hitting a button) to exit stand-by mode.Sounds quality was good too, with very little annoying echo.What killed me, though, was the way it started malfunctioning. It didn't just DIE, it started making calls on its own.I am not making this up. I was driving down the road, phone in the cup holder (so nothing nearby to jostle the buttons) and bluetooth headset in my ear. And I heard a beep and it started ringing. RINGING -- not the little set of tones you get when there's an incoming call, but the ringing you get when you're calling someone. My phone was placing a call to the first person in my address book (also my last number dialed). I stopped the call and it did it again -- four or five times in a row. I finally turned it off. At the time, I didn't know whether the problem was my phone or the headset.It's the headset. This morning, I flipped open the mic and put the thing on my ear. I heard, "Please say a command; please say a command; please say a command; please say a command." I shut it and reopened it. I told it to place a call. The voice said it was placing the call, then it beeped and hung up on its own. This, too, repeated four or five times. I've shut off the bluetooth and the phone has behaved normally since.It was a great little bluetooth, but I'm looking for something a bit more reliable for a replacement.