The helper of the blind / Audio/Video

This headset is mainly designed for the blind,
It comes with a legend,easy-to-use and intelligent pen which has volume controls right.
You can wear it when you are reading.The thick end of intelligent pen can touch the
book,meanwhile you need to press the button.As a result,the words are convented into
sound by scanning.If the volume is too loud ,the thin end of intelligent pen can
be rotated to adjust the volume. You also can make the thin end of intelligent pen
touch the book,then tell what you want to write, so the words can be printed on the paper.