Sony PRS-500U2 is a portable reader system that lets you read e-papers and e-books in comfort. With e-Ink screen type, a 6-inch screen with high resolution of 170 pixel-per-inch, and 4-level gray scale, this Sony digital reader ensures that your reading experience is actually better than paper-based reading. Weighing about 250 g (less than 9 oz) and only half inch thick, this Sony portable reader rivals paperbacks in its ease of handling. Sony PRS-500U2 a soft, black cover that feels good in your hand, and its software lets you browse the Connect eBookstore for thousands of e-book titles. Electronic books can be easily transferred from computer to this Sony digital reader. The best part about owning a compact and convenient Sony PRS-500U2 is that its 64 MB built-in memory and multi-format support lets you carry many of your favorite books and documents with you wherever you go. This Sony portable reader also lets you play audio in privacy, with 1.8 inch mini audio headphone interface.