Battery Life: Read on a single charge for up to 4 days with wireless on. Turn wireless off and read for up to two 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.Image from : cache.gawker.com/.../2008/10/Kindle2_BGR.jpg
Read-to-Me FeatureWith the new text-to-speech feature, Kindle can read every newspaper, magazine, blog and book out loud to you, unless the book is disabled by the rights holder. You can switch back and forth between reading and listening, and your spot is automatically saved. Pages automatically turn while the content is being read, so you can listen hands-free. You can choose from both male and female voices which can be sped up or slowed down to suit your preference. In the middle of a great book or article but have to jump in the car? Simply turn on Text-to-Speech and listen on the go.
Faster Page Turns
Pages now turn 20% faster on average.
Carry Your Library in 10.2 Ounces
Holds Over 1,500 Books
The ultimate travel companion, Kindle weighs 10.2 ounces and holds more than 1,500 books. No longer pick and choose which books fit in your carry-on. Now you can always have your entire library with you.
Automatic Library Backup: Download Your Books Anytime for Free
A copy of every book you purchased from the Kindle Store is backed up online at Amazon.com in case you ever need to download it again. You can wirelessly re-download books for free any time. This allows you to make room for new titles on your Kindle, knowing that Amazon is storing your personal library of Kindle books. We even back up your last page read and annotations, so you'll never lose those, either. Think of it as a bookshelf in your attic--even though you don't see it, you know your books are there.
16 shades of gray
Kindle's high-resolution screen now boasts 16 shades of gray, so images and photos are sharper and clearer than ever.
Bookmarks and Annotations
By using the QWERTY keyboard, you can add annotations to text, just like you might write in the margins of a book. And because it is digital, you can edit, delete, and export your notes. Using the new 5-way controller, you can highlight and clip key passages and bookmark pages for future use. You'll never need to bookmark your last place in the book, because Kindle remembers for you and always opens to the last page you read.
Dictionary
Positioning the cursor in front of a word brings up a two-line dictionary summary. You can then hit "return" to get the full definition. The dictionary contents seem to be roughly the same as in Kindle 1, but the formatting is better and it now uses your current font size.
Flash Memory
When you bring up a menu, note that the top banner changes to display extra status information: the amount of free Flash memory, the time, and the quality of wireless connection.
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