The plastics are of lower quality than they appear, however it is very stable inside the lighter, quick automatic connection as soon as it receives power, it seems that they can hear me sufficiently from its microphone but of course the volume is typically lower than the radio, which forces you to turn the volume up and down before and after each use

You get what you pay for. In this particular case, you might even get a bit more.
It's hard to find a frequency in Athens without interference for FM connection. Anyway, we managed it; with the car stopped it's ok without interference. On the move... that's another story.
Ok for music. Of course, the sound quality isn't great.
Stable bluetooth connection.
For calls... difficult. You have to have everything at max to hear, but for others to hear you better, I didn't find a solution.
In short.
Main use: charging devices, playback via USB. The rest only if and when there is no alternative.

I have used many Bluetooth transmitters, even more expensive than this particular model, and I have to say that it is the best I have bought.... I have had it for about 1 year and it has never let me down!

Although it looks premium and has no issues with connectivity, the only negative I find is that as soon as you turn off the car while the switch is on, it doesn't get power, resulting in it disconnecting from the phone and you having to reconnect it after a short stop.

A bit weak signal pre-amplification. The fit in the lighter socket is very tight. Needs attention.
A bit short "neck".
On the positive side: Very ergonomic, very discreet

Attention, it also has a volume control (on the main body, round, like a wheel that works by rotating...). At first, I hadn't realized it and the sound, speech, music, etc. was very low... I was cursing... until I discovered it... :)
Everything is fine now... I would recommend it.

I read some reviews and I wonder. This little gadget is simply wonderful and the sound is very high quality. I don't know what anyone expects to hear and has such demands. Personally, I have no complaints even with the mono sound.. there isn't such a huge difference that makes it tragic as some describe. I play music both via bluetooth and via sd card without any issues. It makes excellent contact without losing.. maybe the lighter of each car plays a role, I don't know.. in a Focus Mk2 (2008) there is no problem at all. I found an empty frequency and it works PERFECTLY!!! It also has a beautiful blue ring light that gives a very nice feeling to the interior of the car. I have fallen in love with it. I will also try it for phone calls and will get back (although I'm not particularly concerned about that for now as I mainly want it for music).

Mediocre for its price. I was disappointed by the fact that it outputs Mono and not Stereo sound.

Personally, I find it annoying that every time I turn it on, I have to listen to the announcements like (Power On, Bluetooth Mode, etc.). There is no way to disable it. Also, for me, as I increased the RPMs in the car, a strange sound became increasingly louder, but it was only audible when no music was playing.

It's fine for the money, it will be more suitable for someone who makes short distances, because on trips you need to change stations to avoid interference; as long as the station you have set is moving, it might catch something. For those who travel, it's better to get one with aux that isn't affected by anything

For its cost, it is not bad. Sound is mediocre to satisfactory, but it remains a solution of necessity. For Athens, a (hard to find) free frequency like 101.1 MHz should be chosen, otherwise you will complain about interference without understanding how it works. Its microphone is rudimentary, so answer the call from your mobile. I have the impression that the FM transmission is monophonic. It doesn't matter, it does the job if we take into account the extra interference we would have due to stereo decoding.

It doesn't work for speaking. I can't hear and I'm not heard. For music, it works as long as you find a radio frequency that has no interference at all and generally nothing can be heard, because otherwise you hear the interference along with the song! Overall, it didn't solve my problem..

Obviously for its price compared to others, it's fine. However, if you want to get something like this, check if the antenna comes out of the car because it plays differently. Otherwise, use insulation tape. The chipaki removes as much interference as it can, but in open areas, like when you're in the countryside, it doesn't work well, always having the antenna. Also, if you care about not hearing the Chinese voice speaking to you, don't buy it. The positive thing is that it provides good charging power. I tried the auxiliary it has, but it doesn't work for the speakers, it's probably for headphones. Lastly, when you turn off the car's power, the station you have synchronized automatically comes on, so if I want to relax somewhere without turning off the power but just turning off the engine, I put it in first gear and leave the clutch. Otherwise, the gadget is manageable

I was quite skeptical about buying it, but due to its low price, I gave it a try. Very easy to use. As soon as I turn it on, it connects immediately to my phone. I mainly use it for radio and music, and it is quite convenient in terms of sound and size. However, it didn't work well for me as a Bluetooth device for calls. Definitely value for money.

It has minimal interference sound and they don't hear me perfectly from the Bluetooth, but maybe it's because in the Corolla the lighter position is low down! For now, it doesn't bother me. Three stars because it doesn't have a way to go back or forward a song... it only changes them

Very good. I live in the countryside, so I have no interference at all. Good music sound with Bluetooth. I can hear well on calls, but they can hear me from a well, but it's probably because of the position of the lighter, which is very low. Its durability remains to be seen, the materials seem average, but with €10 you don't expect something better. Value for money.

The product is very good. I exclusively use the transmission on the radio and there are no interferences at all. I live in Athens and mainly move around the city center, but even at 100mhz it works perfectly without any interference and the sound quality is excellent with good bass, etc. The only negative is that you will have to adjust the volume to the maximum on the device and then quite high on the car stereo.