There is lots of room to improve, but unless you must have a hi-dpi display, adequate works.

The radio function on one occasion locked up (all else worked) requiring reset button, and on my long trip it corrupted the SD card I installed (none provided) wiping out all of my music. Giving it an extra star for *potential*.

Bluetooth is reliable, and screen mirroring works as advertised

The level 1 is compared to level 5 or 6 to my other Eonon that has been working pretty well for the last 3 years in my other car

Both sound good and navigation works great.