No regrets for choosing this model.
This may be my first helmet but I do not see what we can blame him and I do not see anything you ask for ...
A great sound (I think they do listen very rarely with the sound up!), I even pick my local radio (I would hope not so much!)
I had a little trouble understanding how the Bluetooth switch, micro sd and radio but once you understood everything that is true the top !!!
The blue side is beautiful ... weight ... can withstand several hours without problems
You can buy eyes closed !!!