I am on my 2nd one within as many weeks. Though the piece is comfortable (a bit cumbersome to put on) the biggest problem that I am having is that it turns itself off after 10 minutes on stand-by. This happens all the time; fully charged, half charged, after a reset.. any time that it's on stand-by. Calling Motorola (as instructed in the packaging) doesn't help. They just tell you it's defective and to return it to the retailer. I will say that Amazon was great with the exchange and timeliness of shipping my replacement.