While I had bought 2-3 in the last few years and I was satisfied, they mainly broke due to my own misuse. The last 2 that I bought don't work well at all. Basically, no one can hear me during calls. I don't know if it's because of the upgraded android, because before it made a different sound when connecting, now it makes another... so now I only use them for music from my phone... but not for talking on calls.

Car use: When connected to the car charger, it produces noise, resulting in a very dirty sound, and as the volume increases, so does the noise. I can't use it with so much noise.
Other uses: When connected to a wall charger, the power bank is fine.

Note: If it is for non-car use, there are other devices with better connectivity and sound.

I think I wasted 20 euros on these parasites that it makes (ssssssss) it's extremely annoying. Once I put it on and once I took it off

Very good, but the power cables have some kind of insulation on the copper, so they are not suitable for modification. They are meant to be used as purchased

Very bad sound both in music playback and even worse in phone calls, too many parasites.

Initially, I thought it was my car, a BMW 116 e81, and I bought an aux cable to confirm that the port is not the issue, and the sound was crystal clear. I also tried another charger, power bank, etc., and the same thing happened.

Bad sound quality
Poor connection quality
Network interference
Awkward for Opel Corsa D
Waste of money
I have an iPhone XS Max

Very good purchase.
You connect it to the AUX port and from there it has a cable for the device, which you place somewhere nearby to be heard when you use it for calls, and another one that goes into the cigarette lighter to get power.
It also has an additional port for charging if you want on the adapter that goes into the cigarette lighter.
The microphone has good performance and even though I stuck it next to the sound system, they can hear me perfectly.
It has adhesive and the device attaches magnetically.
Very good.

It loses quite a bit in intensity, with a connection from Xiaomi Redmi Note 9 to the aux input of Audi A5 (2009), but overall it does its job. I bought it for 22€, only for music. The phone function doesn't interest me.

Excellent sound with no difficulty in connection. The microphone works perfectly and the voice is heard without the need to shout. The only negative is that with the heat of summer, if the sun hits the car, the sticker may come off (of course, I haven't placed it on a completely smooth surface, so that may also play a role).

I have had it for six months. In terms of build quality, I really have no complaints. The sound and connection are immediate with the car. However, during calls, nobody can hear me (I have tried placing it in various positions in the car), resulting in me never being able to speak on the phone through the device. I do not recommend it!

I have it permanently connected in my car for over 2 years, without any problem. It has endured much more than other similar devices. It is noteworthy that neither the sticker with the magnet that holds the device has come off, nor has any cable or the AUX port been damaged. (I mention this because I have experienced ALL of these in the past)

It connects instantly, sound quality is excellent for both music and calls, everything is perfect. I sound very good. It needs to be connected to the car's cigarette lighter, it doesn't have a battery.

It needs to be close to be heard. Most people don't hear me well. I haven't been satisfied. On the positive side, the build quality is good, and it's easy to connect.

Having used it for quite some time both in my own car and in friends' cars, I have to say that it is an excellent product that transfers the sound from the mobile phone to the car speakers with great quality. It connects quickly to the mobile phone, has buttons to answer calls and to stop-start and change songs. In calls, it is not that good, meaning that others can't hear you very well and it can be a bit difficult, especially if it is placed in a slightly odd position. For music, it is perfect and that's why it has been created. There is a possibility of encountering a slight sound when the car volume is in the middle and no song is playing, which is logical because it is connected to the car's cigarette lighter, which of course stops when the song starts. Out of the three, it is one of the best Bluetooth car devices!

Very good purchase for its price. Connects quickly to the phone. It has good sound quality and the person you're talking to can hear you relatively well. Also, it is small in size. Good value for money.

Good for its price, it only makes some noise when I increase the volume. It does its job, but I would like it to have better sound quality. The microphone is good, if you have the speakers at a low volume and you increase it to hear better, then the people you are talking to complain that it's picking up too much sound.

It does its job just fine. It doesn't have a battery, so it needs to be constantly connected to the car lighter for power.

After a year and a half, I am still very satisfied .. it works perfectly. It does what it's made for.
I can make and answer calls .. change songs and the sound is excellent.

It has very good performance, you just need the radio-cd to be in the aux position. So every time you receive a call, you have to switch the button from radio or cd to aux.

One of the best purchases I have made! It's worth it. The only slightly negative thing is that you have to plug it into the AUX yourself and speak. But it is a very good solution!!

For the economic category it belongs to, it is excellent. Tremendous sound quality during calls and no delays in music playback. The quick function buttons it has are particularly useful so you don't have to hold your phone while driving when you want to change a song or answer a call. The only unique note is that when connected to the car's AUX and no sound is played from the phone, an annoying noise is heard. However, as soon as any playback starts, the noise completely disappears. I have been using it daily for the past few months and it hasn't presented any problems so far.

Terrible build quality, but the connection with the mobile is great. The voice on calls sounds clear from what I've been told. I hope it lasts.

It looks very good! Good Bluetooth connection with the iPhone. The USB of the lighter is Chinese and doesn't fit well

Very good Bluetooth with microphone with clear sound for others when you speak! Also, very pleasant buttons which you can change songs or answer the phone!

Very recent purchase, so far it does what it promises correctly. Good volume without connection losses in both music and phone calls

It has fit perfectly in my car due to the armrest case (Honda Civic). It also works flawlessly and the sound is clear. Value for money.

For the use I wanted it for, music through the car's AUX is awesome!

It connects instantly and its controller has immediate response (e.g. changing songs)!

Depending on the car charger (and maybe depending on the car), I managed to prevent the device from turning off when the engine stops with the start-stop feature.

I used Samsung's fast charger in the cigarette lighter instead of its own.

Really flawless! It was used in an i20 car and all the buttons work properly with Spotify.

Very good solution for Bluetooth in the car. It is necessary to have an aux input. The microphone is very good and the output is through the car speakers, so everything is okay. Also good for streaming music. I would characterize it as a very good purchase.