This is a ZOOM iQ7 MS stereo microphone. I used it at home for recording guitar. I haven't recorded any vocals, so I think it's relatively clean. Only the detachable case adjuster is missing, but if you have a smartphone protective cover, you wouldn't be able to use the case adjuster anyway, so I don't think it's a problem. The detachable case adjuster is likely for smartphones without protective covers. I'm selling it because I upgraded my phone and can no longer use it.