The first one I had worked excellent. I used the heck out of it, even started to wear out parts on it. I wore out a ear bud cover, the gasket behind the ear bud (buy an o-ring at the hardware store, works better), and my first one looks like it went through a war zone.So I bought a new one for me, and one for my wife. Sound quality is excellent.Note: oil from your hand will eventually 'plug up' the microphone cover (people begin to complain you sound muffled or soft). When that happens (after about a year of heavy use), pull it off and drill a hole in the bottom of the cover to recover the clarity.