Produced very good but ...

Very good sound rendering, robust headset that holds well on the head.
NFC works perfectly well. Sometimes depending on the place where I am music is hatched, but I still have not understood whether it is the helmet that kidding or if no Bluetooth connection.
Especially since the connected device is never more than 1m of the helmet in those moments .. so we have to see where does this problem.
Apart from that, it is very well!