Barnes & Noble NOOK First Edition Wi-Fi eReader BNRV100 - Factory Refurbished 6" E-Ink Vizplex Electronic Paper Display Battery Life of Up to 7 Days (Wireless On) and Up to 10 Days (Wireless Off) Over 2 Million Books Available Wirelessly LendMe Technology Allows You to Share Your eBooks Supports PDF, ePub, JPEG, GIF, PNG, BMP, and MP3 Files