Its OK but poorly fit on the head

It closed headphones supra-aural (= based on the ears) very light folds easily for transport: the atria are folded inward of the arch and remains ultimately the equivalent of a banana that go inside the black velvet cover provided.

+ Nothing to say in the sound: it suits me perfectly because it does not favor any part of the spectrum, somewhat against the grain of current fashion to promote the low to have a "big sound".
+/- This is a wireless headset: bluetooth pairing is very easy, both iOS as Android.
No break in the distribution of music. In contrast, at a low listening level, one perceives the whistle due to the bluetooth (this is often the case even in more expensive helmets!). The trick here is to increase the volume on the transmitter and to drop it on the helmet to make it disappear.
+/- The touch controls on the right ear are sensitive but practical: it often happens that changes the volume by repositioning the helmet on his head ...
- This is also where the rub: the headset is fine as long as one does not move. If you stir a little, he has a tendency to slide forward. Mobile use is rather discouraged the height for a cordless headset! There must be a notion of head shape that occurs: it will read the other comments to clarify this point.
+ The arch is well padded and the headset is quite comfortable. We support long without it hurts the ears.
- I have not managed to test the microphone but it should probably come from me because I do not happen to use voice commands answering machines! However, trigger micro beep android is a bit much for my taste ...

+ It has a practical function: it can be used as wired headphones by plugging it into a USB port of a PC. The PC sound is then broadcast through the headset (no installation problem on Windows 7). A USB-microUSB cable is included for recharging the headset and use wired.

Finally, a good helmet acoustically but few ergonomic flaws (slides forward skull and highly sensitive buttons). A note for the record that a code is provided to download a free smartphone app for listening to music and the radio.