It would be a fair purchase at 50 € if this particular model did not suffer from the known, as it seems, issue with Bluetooth. Within a few minutes of the first use, the unit stopped offering BT connectivity and required disconnecting the car's battery (!) to recover, which of course led to the deletion of stored radio stations. Otherwise, installation is very easy, as the unit has a very small depth, the ISO connectors connect without the need for adapters, the sound quality and volume are decent and more, the buttons are user-friendly and the screen is quite readable. The sound quality during phone calls via BT is excellent for both speakers.

Good sound but the potentiometer gets stuck and it loses the Bluetooth connection. I removed the battery pole and after that it found the Bluetooth, which it suddenly forgot again... it doesn't reconnect anymore... I will gladly throw it away to do my job...

I have had it for a week, in the first week the problems started, I press the button to close when I stop the car but IT DOES NOT CLOSE. IT REFUSES !!! No matter how much you adjust it, IT DOES NOT HOLD, it has its own time !!!
Better give some extra salt and get something more reliable.
It may say Blaupunkt brand but it belongs to the category of bad Chinese products.

Literally awful. It is Made in China as it states and it is wide and broad on its top part, exactly the same category as those sold at fairs and flea markets. It is completely featherweight in terms of weight because it simply does not have any cooling fan anywhere, not even in its rudimentary output, obviously because it does not need it! Moreover, any power measurement of it is unlikely to show more than 8-10 watts RMS in total, something that is also evident from its screeching as soon as someone tries to increase its volume even somewhere close to the middle.
As for the Bluetooth, it connected without any problem (?) and worked normally, I would say, at least during the test.

I also bought it for a cheap branded solution. Unbelievable for its price. Very powerful for 20 watts, I can hear and be heard very well even though it's installed in a convertible jeep, the connectivity is flawless and without disconnections! The buttons also have a nice feel and feedback. It seems like an excellent purchase for now

A reliable and user-friendly device purchased for 39 euros, its sound is perfect, rich and crystal clear. The bass is very good and the treble is distinct. The phone calls are satisfactory for a 4 x 20 watt device, it has a very powerful sound, probably because the stated watts are actually real

I bought it as the cheapest branded Bluetooth car stereo.
For the 39 euros it costs, its sound is perfect, rich, and crystal clear.
Very good bass and distinct treble.
The Bluetooth connects instantly and the phone calls are satisfactory, while the music through Bluetooth has unparalleled quality.
For 4 x 20 watts, it has a very powerful sound, probably because the watts stated are real and not "fake".
It replaced a branded CD radio with 4 x 50 watts, yet its sound seems more rich and full to me.
I think this product is truly value for money..!!!

Worst product. Very poor build quality, the call quality is the worst and the Bluetooth connectivity for music playback is non-existent. It doesn't play any files from the mobile. A disappointment. Stay away.