Both ebook readers feature 5 - inch E Ink screens with 8 levels of gray scale. (blog.the-ebook-reader.com)
However, true tablets will always be more expensive then a dedicated ebook reader, especially ones using black and white E Ink screens with the sole function of ebook reading. (pcmag.com)
This is a unique hybrid device that is no longer being made with an E Ink screen on one side and an LCD screen on the other. (blog.the-ebook-reader.com)