Received older product than advertised. Did not have features which were in advertisment. No instructions from seller for installation or usage. Not satisfied as there are several "bugs" using the product, like controller not working system-wide, bad audio quality, no sound from google maps navigation, screen is not anti-glare which it should have been. Bluetooth is not working with ELM327 adapter, only connects to mobile phones. Bt-infotool shows protocol is actually 2.1, not 4.0 what was advertised.