The headset comes with a USB cable> Micro USB so you can charge your headset on the computer. No problem on that side. I use a charger iSmart in a few hours everything was loaded. I can not tell you how long such a headset loads on the computer. The helmet is discharged after 4 hours of use.
Regarding pairing, it is done very easily with my phone. This helmet has a wire that is flattened, that is to say, it is not round, so it will not wiggle your shoulders or use. It may not be much but it is already much.
The music from both my personal playlist that Deezer gives a correct.
Regarding the call function, it seems okay and worked well for me but I was safe and off (I do not know about you but I've never been able to talk and play sports at the same time . Breathing Problem may be but it is like that).
In conclusion, an audio headset that eliminates the son, the headset works pretty well and does not fall out of my ears when I'm exercising. In short, a good value.