The Kindle DX’s wireless connection now works overseas; offers 2.5 times the screen real estate as the smaller Kindle; native PDF support; you can switch from portrait to landscape mode by just turning the device; large library of tens of thousands of e-books, newspapers, magazines, and blogs via Amazon’s familiar online store; built-in free wireless “Whispernet” data network–no PC needed; built-in keyboard for notes; faster processor speeds up the device; with 4GB (3.3 usable) of internal memory, it’s capable of storing 3,500 electronic books; font size is adjustable; decent battery life; displays image files, and plays MP3 and AAC audio.