ok, not great
My head is kind of big so your comfort mileage may vary. They're not too bad for the price. I'll use them till they don't work anymore but when I rebuy I'll go for something a little better.
Cheap; I bought 3, mic seems to work pretty good on all three; No one on the other end ever reports difficulty hearing me; Comfortable enough to wear for a half hour
I have difficulty hearing with all three; The speakers in the headphones are not very good; Also the input volume and output volume seem to share the same dial and can only be adjusted separately on your PC; Kinda makes the dial not so useful; Not comfortable enough to wear for an hour.