Aesthetics: the product is very beautiful! Well finished, it does not brittle or clumsy, I was amazed to have a product that looked so upscale for the price.
Performances: I am a great lover of music, I listen to absolutely all the time, and the helmet is really not disappointing on this point, he has a very good sound, plus it well insulated from outside noise so no need to push her thoroughly and destroy eardrums!
The battery seems to hold good also. Note that having a cable jack in case of flat battery is very valuable, no need to have a pair of headphones "relief" in the bag in case!
The Bluetooth connection works flawless.
Only negative point the helmet slips a bit, it really does not take much on the head! When you walk in the street look ahead, and if you are late do not think you can run with the headphones on.
In short, this helmet is a very good product, exceptional value for money.
To see what will in the long term, and on this side there is also a two years warranty!