His side:
This one is a little more focused on low, which does not bother me. I was a bit fed neutral helmets, which eventually for mobile use, gives a dull sound ... audiophiles will cry foul, ba I like it!
Comfort:
The helmet does not slip on the head, it holds well, ears are pleasant. Of course it warms a bit, but it is a closed helmet, and there can nothing!
Design:
It is a massive yes, but it is a Bluetooth headset with built-in battery so it takes up space ...
Function:
sound control, calls, move audio tracks, etc. The functions are numerous, easily accessible buttons.
THE recharged via a USB cable, very convenient to recharge at work on the PC or on a USB 220V adapter (with that of our cell phone for example).
There is also a cover and a cable jack in case of battery failure ...
Battery: 2/3 already listening and I have not recharged tjs helmet since its purchase (50% battery) so it suggests that I should not have bp battery! And with Android, the battery status is displayed on the phone, that you ask for?