A few small negatives I have but this fall but not great weight:
-The speech from Navi I find not nice. Most of the words are very choppy and extremely funny, as the voice on the computer that reads the input words.
-The device does not have built-in microphone, you have to externally connect it back and lay in the car.
-The screen brightness can not be adjusted separately. It turns dark when the light is turned on and becomes brighter again once you get off it. Otherwise, no adjustment is possible.
-the lighting of the buttons is unfortunately only white and blue. Would have liked red.
On the whole, the value for money I think is fine. I am satisfied in any case. Everything works without interference and there are plenty of extras to connect, which can be installed.