My car doesn't have wireless Android Auto and I was tired of constantly having to physically connect and disconnect my phone to the stereo in order to use Android Auto, which is different from a simple Bluetooth connection.Bought this one after lengthy research and never regretted it.This one comes with an Android app (downloaded from the Play Store) that simplifies setup and makes it a breeze.This is my experience now:Phones in my pocket, open and start the car and within 10 seconds Android Auto is connected and starts my music (a setting) and shows my my maps and the apps I selected.The convenience is well worth the price.None of the lenghty lag that some experience with other devices.Steering wheel and head unit controls all respond well. Response time is about 1 third of a second which I think is very acceptable.Recommended.Update: someone asked the question whether this unit can be powered via another source (like a cigarette lighter usb charger) to free up the car's usb port for another use.I confirmed this won't work. This unit needs to be connected to the car's infotainment system via its usb port to work.Thanks.