Rather than recap the tool, I will share the video made by the TextHelp:
RWG will read PDFs, ePubs, and KES files, as well as any text in your Google Word Processor. The voice quality is very good. To emphasize this, while reading the sentence being read is highlighted in yellow, and the word in blue. This function allows the reader to follow along with the text. The translation tool is interesting and unique. Also, the tool bar is simple and intuitive.