InkBOOK Onyx is one of the most versatile e-readers on the planet. It has WiFi for direct download of books from Midiapolis Drive or Midiapolis Store. Android give you an option to customize your reading experience. You can download and install apps from Midiapolis App Store.. 8 gigs of internal memory it’s a plenty of space for your personal library. If that wouldn’t be enough, there’s a micro SD card slot in your InkBOOK.