Top audio quality, top microphone, Top Battery / function

I'm really surprised. The device has a battery, so that I can with my BMW 1er So even with the engine still off music stream. The sound quality is great, has confirmed a critical friend (you things to talk Sometimes even nice;). During a telephone conversation the other person understand me well, even though the microphone is with me underperforming. 2 things that could be better:

- The Voice memo (ie phone calls) are much quieter than the Musikprotokoll, ie the phone I have to turn the volume up a bit.
- The "Next Track" by double-clicking the button is not supported

Otherwise it works 1A, and the answer / end calls by pressing the key. Too bad that apparently all Aukey items are no longer available - a great company with good quality, have also connect the car charger from them.