Almost a month with daily use for almost 2 hours every day.
In the Pros:
Endless battery life!
Very sturdy construction.
Easy to use.
Very fast connection.
Sharing music with a passenger or another rider

The second one I buy in 10 years
I use the first one for the second helmet of the passenger and it still works perfectly.
I have traveled the world's kilometers and it has fully met all conditions, rain, hail, heat, desert (trip to Tunisia for 15 days) and of course in harsh daily use.
Music from quite low to loud at incredibly satisfying levels (it's not a home stereo)
Clear speech on the phone without interference and parasites, even on the highway at speeds over 130-140 km/h I can hear the noises.
They hear me very clearly without noise from the road, etc.
Radio, Bluetooth connectivity with the phone and other devices easily and quickly.
Easy to use via voice control.
The features, once I learned what each button is for, became easy to use even with winter gloves.
The only issue my first device had was the normal wear on the connection cable after 4-5 years, which was easily and economically solved as there is a kit and so I replaced it. It no longer occurred once I learned how to handle it.
Extremely satisfied, which is why I bought the second one again.

After a month of use, I have to say:
++++++
1) Very good battery that lasts for many days with use.
2) You can stay connected with the second intercom while traveling, and each person can listen to the radio independently, which is very positive.
3) It looks and feels sturdy.
4) It is very powerful as long as you set it up correctly from the beginning. (I provide a video for a complete analysis of the settings) - https://www.youtube.com/watch?v=uYtGbus2pEA&t=287s
5) Charges with a common mini USB.
6) Can be connected to multiple devices simultaneously.
7) Performs well at speeds of 130-140 km, you can hear and be heard clearly.
8) Works perfectly with the mobile phone (iPhone 7), and you can be heard as if you are in the same room.

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1) It has a clasp that makes it somewhat difficult to fit into the helmet every time.
2) When connected to the second intercom and listening to the radio at the same time, if the passenger talks (or there is a lot of wind and the passenger's microphone picks it up due to incorrect placement), it reduces the volume of the radio so you can hear what they are saying. This is a bit annoying and I haven't found a way to disable it as a function.
3) In music, even if you have adjusted the headphones well for your ears, the music is too treble-heavy and can be bothersome at times.
4) The price could be more affordable.

Nevertheless, I highly recommend them, they are worth buying for someone who can afford it.

*** 25/12/2022 Update: It has fully met my expectations. The battery is very powerful, very user-friendly with large buttons, the radio reception is very good, the volume is very satisfactory, and I have no regrets about my purchase at all!

Guys, it's the best thing ever. It's worth even more than the money you pay for it. With the battery, you forget to charge it. Greek speech for connection information, battery, and other options. You can comfortably talk up to 150 even with a noisy helmet. The build quality is very good. The software is great and it updates when you connect it to the internet! No problem with the cables and connection unless you're clueless.

Very good sound quality but its software is terrible and the cable that connects the speakers to the base has an issue. It is not justified and it is not worth its money at all