I've had this headset for several months. When it's on it works great however after about 20 minutes it turns itself off... I'll be sitting there with my phone on my desk and all of a sudden I hear the descending beeps in my ear... and it's off. That is, if I'm in a quiet enviroment. If I'm in the car I don't hear the beeps.Since the blue light stops flashing after about 5 min's (as designed) I have no way of knowing if its on or off. Then, I'll grab my phone (Treo 650), make a call and set the phone down only to find that the person who answered is talking to nobody because the headset turned itself off... again!