Well, today I did the first 500 kilometers (trip) and practically the first use of the helmet

Very light feel and practically it is light.
It has quite good quality on the interior and visor (the paint is so-so, at least in the blank version I have, although that doesn’t bother me much)
I don’t know what they write, or rather where they come from, about the noise (probably some helmet over 900 euros), but it is one of the quietest helmets I have tried up to 450 euros; whether you go at 80 or at top speed, the noise is quite low)
No vibrations at all (good aerodynamics); I have tried it with the bike’s "windshield" lowered and with it raised.

The internal sun visor is very good; at first glance it looks quite clear, but it blocks the sun very well, like polarized glasses.
The lever to open and close the sun visor is in a convenient place, more convenient than it looks in the photo once you get used to it.

The Cardo speakers fit without any hacks or cutting the foam, meaning only the cables gave me trouble, but the good thing is that they are in such a spot that you feel like you’re on the couch listening to stereo while riding on the highway.

Now the negatives.
It is quite hard for me to open the visor; with bare hands no problem, with summer gloves there is some effort, I think I’ll learn the trick, with winter gloves I think I won’t be able to do it even as a joke.

Ventilation I think is average; whether open or closed I don’t see a big difference. Right now it’s not hot, so for a mild summer if this is really confirmed I’ll die alive inside the helmet.
But I give it 5 stars because up to the money I said I’ve tried, it is much worse, but I’ll take it down to 3 stars if in summer it really turns out to be impossible to use.

Another update after 2 months and heat, etc.

Outside ventilation is fine even at 35–36 degrees, in the city it is not enough, especially if...

DO NOT BUY A BLACK helmet (first and last time I buy a black helmet.....in summer it literally doubles the temperature)

for the money it costs (i.e. 250 to 350 euros) it is PERFECT

So, in turn, let me tell you my impressions. I have had it for over 6 months in the city and I ride a scooter. I have the impression that this is better suited for super sport motorcycles.
Positives: good fit that even after 6 months is still tight and can be a bit uncomfortable after many hours. Double D ring. Quality materials if we believe what the manufacturer tells us.
Negatives: overall, I am relatively disappointed for the money it costs. I have the matte version and it came with some areas where the color was a bit faded and some marks that seem to be from the paint and processing of the helmet, so it's not the store's fault for the marks, they are not scratches. Visibility, I have to slightly tilt my head down on the scooter to see the road well in front and below, keep in mind that I have removed the protective shield in front of the nose to see better. The sunglasses it has do not come down all the way and with the aforementioned shield removed, some sunlight gets in and the wind brings all the debris right into my eyes. It is generally noisier than I would like, especially at higher speeds. The weight is a bit heavy and with the slight tilt I do to see, my head starts to hurt after some time.
That was generally my experience with the helmet. For the money it costs, you don't easily find the package of material quality it has, with the leather and the anti-fog visor and sunglasses, but it could be much better! That's why I give it 3 stars instead of 2