Positives:
Very easy installation.
It retains all system and station settings in memory.
As long as the system remains on and the car is turned off and the button on the car key is pressed, the audio system activates on its own as soon as the door is opened within 2 minutes. After 2 minutes, it opens only by pressing the SRC (on-off switch) and returns to its last function, radio station or USB.
It has a digital sound processor (DSP).
Many automated sound settings, but also specialized with options for speaker size, separate front, rear, right-left, subwoofer, etc.
Bluetooth 4.2 with HFP V1.7.1 and many connection settings.
Accepts firmware upgrades.
Connectivity with Android devices and Spotify functionality. And iPod for Alexa, but I don't know because I don't have it.
A hub can be connected to the USB port.
Plays most file types:
MP3 - 8-320 kbps / Variable Bit Rate up to 48 kHz
WMA- 32-192 kbps / Variable Bit Rate up to 48 kHz
AAC-LC - 8-320 kbps / Variable Bit Rate up to 48 kHz
WAV - 16 bit up to 48 kHz
FLAC - 24 bit up to 96 kHz
Recognizes and plays up to 20,480 files + folders
Up to 8 levels of subfolders
Up to 999 folders
Up to 999 files per folder

Negatives:
The most important of all, it requires a change in the memory cables (red with yellow) otherwise it will not retain anything in memory, but it can also interfere with the car's locking or immobilizer, so this must be done before the first connection.
Very plastic construction that needs to be handled with care as it appears fragile.
The central button that manages and is also the volume knob requires soft movements as it appears delicate.

Overall, it is a technologically excellent device with excellent connectivity specifications and sound options that will satisfy even the most demanding users, but with a somewhat not so high-quality construction. Of course, with careful use, it should not have any problems.