This headset can loan knows everything. It can be used in wired mode, that is to say with an audio cable supplied connected to any audio device with a 3.5mm '(iPod, phone, computer, ...). In this mode there any control functions do not work, not even the volume. By cons in Bluetooth mode, things are greatly improved. First you must pair the Bluetooth headset with its counterpart (phone, laptop, ...) remaining long pressed the big button (until the LED flashes blue / white alternately. Once connected, it's cool, we listen to his quiet music, without son, with a range up to 10 meters right. You can adjust the volume, and switch from one track to the other with a knob located on the right earpiece. For music but not that. If you are connected to your phone, then you can also answer a call, hang up and then discuss just from your helmet. The microphone is also located on a headset, but according to my correspondents, the sound was good.
By cons, as soon as you plug the audio cable, the Bluetooth connection is cut off.
Musically the sound is good, with quite low if it is centered on the ears and a very good record also in the treble. The headset folds to take (some) less space and seems durable. The headset can be recharged using a micro USB socket of the most classic (5 hours to fully charge from the mini documentation)
In the end, my only concern is that after a long time of use, I am forced to withdraw because he squeezes my head too. I have yet adjusted to the maximum opening, but nevertheless it's still uncomfortable over time (several hours).