I was immediately captivated by the design and foldable side, in fact they have copied the design of the Sony headset with 15 years late. The sound is clean for Bluetooth, but the headset does not properly fit on the 2 ears, as soon as you adjust a branch is the trunk, put in place and the other ear will have more music. Yes it is cheap compared to the competition and I understood why it's a shoddy product. He broke down one month after its acquisition. The SAV, interposed by email, did not even want found poor production, they told me that the case was not supported. In short, go your way, there are good stereo Bluetooth headsets for a few euros more, they will have a shelf life much longer.