i guess some people need to know this, based on my experience with other brand
no mic = works on every device with 3.5mm jack, OMTP and CTIA
one click mic = works only on CTIA device
3button ios = work with all CTIA device, but volume button only work in apple device
3button android = work on every CTIA device, but volume button only work in android
no mic version is the best for me because sometimes i listening music using my old sony ericsson cellphone which still using OMTP and of course more parts = more thing to break later on. but YMMV
if you only need the skip or previous button, you don't actually need to buy the 3 button version.