If the microphone can do what they say (only listen in that immediate area) then that's really cool. (Big if - I believe you can filter by angle, but my understanding of physics precludes filtering by distance; someone please correct me if I'm ignorant)

The mute button is a good idea - I strongly prefer having a nice dedicated button, though in my case it's on the headset - but that placement seems guaranteed to put force on the USB port in a way that risks damage.