This is a wonderful sound source... Convenient and sensitive radio reception... Perfect USB and Bluetooth functionality. Keep in mind that I use it with a sound system. I achieve exactly the sound I wanted... without any particular difficulty...! Very powerful source without distortion.

Returning after about a year of being installed in the car. Very high-quality sound with endless and very detailed settings for everything. The only serious problem it has developed is that for a while now the front display does not light up properly and letters like the clock and some others in the center of the screen have started to fade... Probably heading for a front display replacement... which is not cheap and I don't know if it will be covered by the warranty. I should note that the letters fade after it has been running for about a quarter of an hour or if I make the mistake of turning on the heater in the car and it warms up.

In the end, after so much time of use and while it is under warranty, I tell you not to buy it. Poor build quality... the screen often does not turn on... or the device doesn't turn on at all... Besides, it turns off in potholes from time to time... It was checked by an electrician to see if it was connected properly... and everything is okay. And to send it for repair, I have to spend around 50 euros on gas... with the current price... I'm throwing it in the trash since I bought it for 57 euros on Black Friday... Stay away from this Chinese product... stay away

Well-known company and an old fan of it with a borrowed Nakamichi Dragon deck for those who remember it. So I didn't miss the opportunity when I saw the brand again in Greece.
Impressions
After several years, I listened to the quality 320kbps/mp3 in my car. I hadn't heard such a frequency range since the CD era. Amazing response from the USB player... by the time you press the next track, it has already moved on. Very good radio even with the lousy internal antenna I have, and I didn't expect that. Compared to other branded systems you buy, here you choose what color lighting you want, and there are many options. Its amplifier comfortably drives four speakers without distortion at high volumes... if, of course, you can handle it. I have nothing to say about its Bluetooth because I have another system for that... but I believe that with an extra microphone when you connect it (the cable is ready), you won't worry that they can't hear you. If you place it low in the console, I believe its microphone on the front won't pick up well. Very good build quality... imagine that the heatsink on the back has the brand embossed on it.
It also has an app on Android to control it, while the remote control for basic functions is very powerful.
The only downside is that this model doesn't have an SD CARD, but personally, it doesn't bother me.

1 1/2 years later update
The Nakamichi works like a charm (3 hours a day due to travels) and hasn't made a peep. A little while ago, I removed the USB stick and forgot it, and connected my phone with the app. It connected flawlessly... you either play your music from your phone or select it from the Nakamichi. I mean, you will have the player from your Android and choose tracks forward and backward... or you will do it from the Nakamichi. Also, on the phone, you have an equalizer with many settings... and you can adjust it as you like... with frequencies... or create your own graph. The amazing thing is that it automatically switched to secondary Bluetooth while I was playing music from my phone... I answered calls from the Parrot Bluetooth I have. In summer, the Nakamichi doesn't heat up and works perfectly (I'm talking about temperatures 40+ in the plains of Larissa). Let me make a note. The quality of the music... depends on a) the player b) the quality of the song (320kbps..260kbps..160kbps etc.) Don't expect to hear quality from Spotify. c) From the speakers you have (factory ones are different from branded but expensive ones). But if b) is lousy... what will the speakers produce? Frequencies that don't exist? I have copied a vinyl record... and then at 320kbps, and it makes some separations... you can hear some frequencies... almost like I'm listening to the vinyl.
P.S. I should note that for the USB stick, it's good to use the ex-Fat format... and of course, don't remove it while it's playing. Choose another source (e.g., radio) and then remove it or when it's off.