At 10.2 ounces, Kindle is lighter than a typical paperback and as thin as most magazines. Barely a third of an inch in profile, you'll find Kindle fits perfectly in your hands. Kindle is as easy to hold and use as a book. We designed it with long-form reading in mind. When reading for long periods of time, people naturally shift positions and often like to read with one hand. Kindle's page-turning buttons are located on both sides, allowing you to read and turn pages comfortably with one hand from any position. The page-turn buttons now flex inward to prevent any accidental page turns when picking up or handling Kindle. Kindle has a new easy-to-use 5-way controller, enabling precise on-screen navigation for selecting text to highlight or looking up words. Kindle is completely wireless and ready to use right out of the box--no setup, no cables, no computer required. With Kindle's 25% longer battery life, you can read on a single charge for up to 4 days with wireless on. Turn wireless off and read for up to 2 weeks. Battery life will vary based on wireless usage, such as shopping the Kindle Store and downloading content. In low coverage areas or in 1xRTT only coverage, wireless usage will consume battery power more quickly. Whispernet utilizes Amazon's optimized technology plus Sprint's national high-speed (3G) data network to enable you to wirelessly search, discover, and download content on the go. Your books and periodicals are delivered via Whispernet in less than 60 seconds. And unlike WiFi, you never have to hunt for a hotspot.