Within Athens, I have not faced any issues with the use. There are definitely interferences but it is almost impossible to notice them.

One very positive aspect is the automatic frequency tuning!

As for calls now, do not expect much from the built-in microphone. 2 out of 3 times the caller hears me very quietly or not at all.

Overall a good product. 4 stars purely because of the price as there are cheaper transmitters that do more or less the same things.

The review is made having the product only one day in my possession, if something changes I will come back with an edit.

+ Listening to music from Spotify, YouTube, etc. through the phone, in a car that does not have Bluetooth or Android Auto.
- However, it often interferes (tested in Athens, where it is extremely difficult to find an empty frequency), the sound quality is mediocre with a tendency towards good in case you are in an area that favors minimal interference. Those of you who have the impression that you will hear your favorite music in good quality, just forget it.
+ Mobile phone calls through the car speakers and built-in microphone in the transmitter. I could hear my interlocutor very well and he could hear me too, I was stationary with closed windows.
+ Mobile charger with the classic USB port and also type C. It is supposed to support fast charging, but I haven't tested it yet.
+ It has all the above features in a small device.

At 29.90, I would characterize it as a decent gadget that gives you the ability to do some things that you could only do with the purchase of an OEM that costs 200+ euros.
Okay, you will make some compromises, but you should also know what to expect from a product.

Expensive toy for beginners. It cannot be compared to other products that cost half as much. Until now, I knew about AKAI from Japan, then from Hong Kong, and now I had the misfortune to also know about AKAI from Romania!!

The AUX surprisingly has snowflakes (yes, it has AUX even though it's not written). It plays FM just fine, I have no issues. The microphone does its job, it's just low for me and needs a little volume in the voice

First time using an FM Transmitter, I have been satisfied with its use so far as it functions not only as an audio transmitter but also as a hands-free device, allowing you to have phone calls through the sound system simultaneously. It is easy to change frequencies and if, for example, there are interferences with some, the auto function switches to the next available frequency easily. Its construction is sturdy and shows some quality, time will tell.