Problem? Plugged it into a wall and it just buzzed/hummed. Now Amazon tells me I cannot return them. These sandals didnt come in the EEE width that I usually need, but they fit just fine, anyway. This may be the best headset Ive ever owned. She loved them . A significant side benefit of the case is that its outstanding battery capacity can be used to charge your phone. I work from home and am using this headset to make phone calls. Yes, it is small hence you need to accept that a little more effort will most probably be required to fully inflate a tyre but, so fa, it certainly does what it claims to do. When they work, they do everything I would hope. One more thing to note, it sounded amazing when I first got it out the box.