The car radio is really okay for the price. But there are also a few things that make me really nervous. First time the radio has a DIN antenna connector. An ISO -> DIN plug adapter is not included. Taste again additionally 3-5. The preset key "1" is much too close for my liking on the volume control. This could have been solved more elegant. About the "answer key" it is perfectly possible to answer a call. Unfortunately, I can not hang it. It just does not. And that was it already with the criticisms. What the radio can really well is play music. Whether the smartphone via Bluetooth or USB flash drive - Everything is working perfectly in my case and in very good quality. When everything is set first, I really can not notice any poor voice quality when making calls. (At least Bluetooth 4.0 + EDR assuming) all is well, and also the interlocutor gets a good quality. Give yourself just a little bit trouble attach the microphone and cable laying. One should sometimes take the time to read the instruction manual. - That helps tremendously. You can really adjust nearly everything here. It is also not necessary to install an additional app on your smartphone. At least not with Android 4.4.4. Oh, I can recommend. Prove necessarily advance what you have for an antenna connector. At ISO you need an adapter.