I used this when my child was applying to kindergarten, and we were accepted by two schools. My child studied a lot, so the crayon marks on the pen won't come off. The audio function works. Please purchase only if you don't mind the stains. There are no accessories. This is an audio pen that was used in the "Donchaka Preschool" by Riei-kai. When you touch the corresponding materials, the audio will play, and it can be used for early childhood education.