I order this pair of headphone for my Motorola Triumph smartphone . so far I do not have real complaint . under normal noise level the ambient noise be greatly isolate and I can hear music or person in the phone w\/o any problem . people tell I I sound a little muffle but they can understand I w\/o and problem . in noisy situation -lrb- I have worn these while mow the lawn as well as while ride my motorcycle -rrb- I still get ambient noise come through - but I can still hear the music very well . I do not play my music very loud ... usually only at around 50 % and I wear a 1\/2 helmet so I know that there be a lot of noise when I be ride . I have not have to take any call while on the bike so I be not too sure how well they will perform in that situation . the in-the-ear bud be comfortable and they stay in my ear even when I be very active . the headset come with several different tip for I to select the right size for I .