While it still has everything you loved about the first Kindle Paperwhite — a glare-free display for easy reading in direct sunlight, eight weeks of battery life, built-in WiFi and free 3G, and Amazon's generous selection of books — the update gives readers an even better experience. Its new display features higher contrast, with whites so white and blacks so black it feels almost like reading a book, while a built-in light helps prevent eyestrain at night.