good sound, good microphone for calls and most importantly, it always connects, not like others where you have to remove and reinsert them into the usb to connect

I am puzzled by some negative reviews regarding the sound, saying it is low and that some people hear noise. In a Kia Pro Ceed 2009, it works as if you are listening to music from a USB and plays everything perfectly, just like with calls—you can hear and be heard crystal clear. For those using a USB charger from the cigarette lighter, it will make noise because the charger is probably very cheap or Chinese, as my first test was with such a charger. I also had a more expensive, higher-quality one and there was no noise at all, nor was the volume low. For its price, it is more than worth it and connects without any delay.

Very good!! Both for music and calls. During calls, the sound drops and you have to increase the volume from the radio (something that happens with almost all Bluetooth devices). The reason for the 4 stars is that if the power is momentarily cut (when the car starts, it briefly cuts the power to the cigarette lighter), then the music plays with interruptions. To make it play again, I have to remove the cigarette lighter for 3-4 seconds and plug it back in.

It connects easily and you don't need to do anything every time the car starts and it powers it. They can hear you well

In general, I have a high tolerance for Chinese products, but for a Bluetooth that connects with a jack, I expected much more in terms of sound. It's weak and the sound is completely poor. It is on par with FM transmitters. Compared to a MW600 Sony Ericsson that I have had for 14 years, it has far worse sound, and the technology is quite outdated for such a bad acoustic result from a Bluetooth that connects with a jack. For the quality it offers, it deserves the 3 stars because for calls it is decent, and there you don't really care about the sound quality.

In summary: I will use it for calls, but for music I will probably stick with my old Bluetooth.

Quite good for the money.
They hear you well, you can hear if you raise the volume on the speakers.
The button it has helps you answer and end your calls while you have the phone, e.g., on the windshield.
It connects immediately when you get close to the car.
If you want something affordable and good, get it, it's worth it.

Perfect....it does exactly what it says!!!! Good connectivity....good sound on its microphone....

5 stars from me as well. It connected quickly and easily (Opel Corsa 2012)

The microphone picks up from a relatively long distance. I answer calls normally. It has pause and next/previous song.

There are a few interferences, but when the music starts, you can't hear anything.

The only little issue is with the car lighter connection, but that doesn't concern this specific product.

Very helpful and easy with good sound quality, fast connection with the phone, does what it says so far, I am completely satisfied.

Connects very easily, the microphone works perfectly (I have stuck it next to the steering wheel), I recommend it without a second thought

You can't hear anything. You have to turn it up to the max. Yes, it does connect without any problems, but what's the use? Such a shame.

Very good for its price category. Clear calls from both sides, without ideal microphone placement (I put it close to the lever). The sound quality in music is satisfactory, without being anything special. It connects very quickly without interruptions. It does what it promises, it synchronizes an old sound system in terms of Bluetooth connectivity with some slight compromise in sound quality.

Good machine for its price. Instant connection with the mobile as soon as the car starts. The interlocutor always hears me satisfactorily. The four stars are because I would like it to sound a little louder but without it being a significant problem.

Very good sound quality, very easy to use! Just what you need for cars that don't have Bluetooth! It solved my hands!

With the turning of the key, it immediately connects and makes a distinctive sound. It transfers music and calls correctly to the speakers, although I need to increase the volume quite a bit on the aux (compared to CD and FM) to hear satisfactorily. The microphone works perfectly despite not being positioned at mouth level, and the included adhesive is of good quality, leaving no marks when removed. On the downside, the necessary increase in call volume causes static in the speakers.

top of the top!!! Someone has written above about some functions that all the buttons have. I won't repeat anything, it's just perfect, worth its money, without even holding the phone in your hand or anything, and whatever songs you want and very good sound quality without interruptions, the most important thing!!!

Very good bluetooth receiver. Good call quality on both sides, and good music playback from the speakers. It can be paired with a power bank or a car USB charger. It comes with double-sided velcro adhesive. For those who use it with a car USB charger, it does not need to be quick charge (high amperage).
Also, for those who use it with a USB charger and experience interference, purchase a ground loop isolator mini jack to mini jack. It is not expensive, around 5 euros, and it eliminates the noise.