While bare bones (no manual) and a little different way to fit (flex piece fits under the ear lobe, which take a little getting used to) this sounds good and feels fairly good. I called my own voicemail to see how the microphone worked. Blocked out the AC noise from my window unit and sounds clear. Not sure if it would feel good all day but so it seems to feel better the longer it's on.Check on-line for the (very small) user guide if you need it. Briefly: flex piece goes under ear lobe or back of ear. Push button on cord to start or stop call (or use the phone itself). Slide switch on cord up for mute, down for talk. I was looking for a non-bluetooth boom mic (reduce radio waves by my head). Overall, I'm happy with it.