Nissan Tiida 2012-2014 Autoradio GPS Aftermarket Android Head Unit Navigation Car Stereo (Free Backup Camera)

It's a piece of tech that connects your phone to the head unit in your car so that you will see a simplified version of your phone screen on the infotainment display. You can watch the video below that explains carplay features 
https://www.youtube.com/watch?v=Ek7iiqwiXuw

Note: Apple carplay is wireless as well as wired. Android Auto is also wireless as well as wired. We highly recommend adding this option.

DAB radio is not available in America. It’s only available in some of the E.U counties and Australa. Here is the list
https://www.worlddab.org/countries

OBD2 is a vehicle diagnostic tool that can be connected to the OBD port of the car under the steering wheel. It displays fault codes via an app on the head unit’s screen. The link to the product is here
https://www.sigmacarstereo.com/obd-ii-diagnosis-adapter