Assistive listening device not for medical purposes; Downloadable software for improvement of cognition and/or hearing of the subject by listening to sounds, tones, notes, or music; Recorded software for improvement of cognition and/or hearing of the subject by listening to sounds, tones, notes, or music

Assistive listening device not for medical purposes; Downloadable software for improvement of cognition and/or hearing of the subject by listening to sounds, tones, notes, or music; Recorded software for improvement of cognition and/or hearing of the subject by listening to sounds, tones, notes, or music