macs don't have 8mm headphone jacks?
They do, but it's only 1 4-pin jack. I could always get an adapter that combines 2 3-pins [mic and audio].
I kept the same headset for like, 3 years I think it was before I had to get rid of them. They were a $20 pair and had to be repaired twice.
These are what I use for my computer right now in place of the other ones that aren't working. Still good after 3 years; no repairs, but the false leather wore off.