The device has an 8.1-inch touch screen, enough memory for 1,500 books, and a broader catalog than its closest competition, the Sony Reader Daily Edition. In addition to the Barnes and Noble library (which, like Sony, includes half a million public domain titles via Google Books), iRex has partnered with NewspaperDirect and OverDrive. Just like on the Sony, OverDrive allows users to digitally borrow books from public libraries' e-book collections for free. The iRex can also read ePub format books, PDFs, text files, and Fictionwise titles. There are currently no free public domain titles on the Kindle, and Amazon's e-book library's 300,000 volumes are aptly bested by Barnes and Noble's, regardless.