I really wanted to buy it because of the price, even though a friend of mine had it and had told me impressions, really it's not worth getting something else

I have it for 3 months and I can say that it satisfies me completely, very good battery life, installation on nolan n87, strong and good sound depending of course on the quality of the audio track, the radio is excellent, it catches almost everything in the province where I move, the Greek speech needs some small improvements but overall it's fine. It remains to withstand the test of time.

The best purchase I have made for my motorcycle! I have been using it for 6 months and I am completely satisfied. The connection with my mobile phone (iPhone) is immediate and flawless. Those who hear me can't believe that I am riding a motorcycle. The intercom function is very satisfactory even at long distances. If the connection is lost due to distance, it automatically reconnects as soon as it is within range again! The radio and music (Spotify) are also excellent! The sound is loud even with earplugs (for touring motorcycles). On a sport motorcycle, the sound is clearly reduced due to the motorcycle's noise. The battery lasts forever, with daily use it lasts a month or more. It has become an essential equipment for me. For me, it is worth the money and more.

Quite good, the battery lasts for months!!!
It does not have noise cancellation and its controls are quite large, I have tried it on both full-face and jet helmets.
You can hear the wind from the passenger through the intercom.
It connects very easily to the mobile phone and to other intercoms, the radio is good and picks up stations very well, with 6 presets and very easy handling.
Make sure to update before installing them on the helmet

After three months of use, I can say that I am very happy with this intercom system.
Specifically:
It is waterproof. After winter rainstorms, I had no issues.
The battery life is incredible. After the latest upgrade, it lasts for 20 hours. For me, who uses it daily for about 1.5 hours for radio, Bluetooth with my phone, music, and calls, it practically means charging every 2 weeks without immediate charging notification.
The sound quality is amazing. With my racing premier dragon helmet and noise from earplugs and speeds slightly above the legal limit of 150km/h, I can listen to music just fine. And if I reduce the speed to around 100km/h, I can talk on the phone without the other person knowing I am on a motorcycle.
With communication with another rider on a different bike, we had good conversations for hours at distances of around 500 to 800 meters, with a small issue when the communication was restored after losing connection due to distance. It can be fixed by restarting.
The radio has very good reception. I dare to say it's like a car radio, and I use it every day within the city, but it has also been tested with excellent results on mountain routes.
Overall, I highly recommend it, even at the high price in Greece.

UPDATE 2-1-2020
After two years of daily use, I have no issues. It performs just like the first day, whether in winter or summer, inside or outside the city. Simply flawless. It is now installed on a SHOEI RYD helmet.

UPDATE 17-1-2023
With intensive use, the battery may be a bit tiring. It lasts for 10 to 12 days. Other than that, it's like the first day. The only thing that changed is the wiring because it broke at the mini USB port.
Simply perfect.