The Amazon Kindle is mobile device designed for reading electronic books (e-books). The reader was developed by the Amazon.com
subsidiary Lab126, and its first incarnation was launched in the United States on November 19, 2007.
The Kindle features an electronic paper display and will download content over Amazon Whispernet using the Sprint EVDO network. Kindle hardware devices can be used without a computer, and Whispernet is accessible without any fee. These devices also provide free internet access to Wikipedia.
On Monday, February 9, 2009, Amazon announced the Kindle 2, which became available for purchase on February 23, 2009 for the price of $359. The new Kindle features improved battery life, 20 percent faster page-refreshing, a text-to-speech option to read the text aloud, and overall thickness reduced from 0.8 to 0.36 inches (9.1 millimetres). The Kindle 2 has 2 GB of internal memory of which 1.4 GB is user-accessible. Amazon estimates that the Kindle 2 will hold about 1500 books. Unlike the original Kindle, Kindle 2 does not have a slot for SD memory cards. To promote the new Kindle, author Stephen King has written a novella called UR, which is available exclusively as a Kindle download.