I'm only using this headset for narrations, and it works very well for that. With the bud in the right place, voice sounds very good. Just make sure you turn your microphone level down a bit, using whatever microphone options your computer has.
For audio they are not so great, but since it's designed for web chatting and not music; this isn't going to be a problem for most users.
They're not stunningly comfortable, but there is plenty of size-changing for heads of all shapes and sizes. The bud has plenty of movement, but tends to move back into its original position when you adjust it, so it requires some fiddling.
If you like to webchat, or just like the sound of your own voice, then this cheap headset is for you!