So once before starting, the headphones are really great, but now the pros and cons! Top + top without discussion, + sound + good seat + load quickly (3.5 hours), + range is also ok, fast connection +, - Doubly occupied keys are hard to use and the volume control is not possible, well, you can Yes regulate the phone! - No wechelbarer battery, while on or off the announcement comes power on or power off, unnecessary for me! A signal would have been enough! - Can be loaded only on USB to small manual and not in German! How you can use it as a headset, I have not yet herraus! Found!