so i cant give them a 5 star though this was a hard call just because of the price. The sound is good but i have better in others with dual drivers but having said that the sound quality is good. as far as the level of loudness they get loud but could be louder have in mind too load can damage your ears so they work thats for sure. Bass is there as well but not over powered.
As far as the noise canceling it can keep up with the big guys have in mind its not at over the ear level but for in ears its good blocks out fan noise well and rumbling noises. blocks out some vocal noise but not all well not at all but the big guys cant really do that too well and for the price i find it worth it.
I have not fully tested the battery life but i think it will live up to the numbers given.
In conclusion i think that they are well worth your money