The sound quality is really (at least in my opinion, I'm not an expert), the duration of battery life is good and upon receipt if your phone supports NFC, it's perfect for the first ignition, n 'There has to pass the phone over (this one should not be idle), the enclosure comes on its own and it only remains to launch his favorite music :-) I even listen wifi radio with my phone (because I have a bad reception of radio waves) and the enclosure follows me everywhere, kitchen, bathroom, bedroom, without loss of transmission between the phone and the speaker (for a flat). Last positive, she followed me on my holiday place because (again in my opinion) little space in the suitcase ..