FYI, if you're planning on using these for more than "sport" (no word on water resistance and this design isn't going to stay in place very well) or sitting at a desk, be aware that the control placement is a problem for things like air travel and other times when you might sleep or rest your head against something. I have some fairly nice Phillips Bluetooth headphones I stopped using for that reason. It's an annoying and not readily obvious usability problem. If these are using touch capacitive buttons it would solve that, but then it's hard to operate them just by feel.