Well insulated, so that the wearer is the only one around who cant hear the recording. For use in rooms when someone has a headache. Ha.
-- Blumster, Jan 22 2005

How would you insulate it so that the wearer couldn't hear the music via the vibrations travelling throughout the earpiece?
-- pooduck, Jan 22 2005


Noise cancellation.
-- Blumster, Jan 22 2005


Input talking books.
-- skinflaps, Jan 22 2005



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