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(1) For Kindle Android tablets, see Kindle Fire.

(2) An e-book system from that includes a family of portable e-readers and a vast library of e-books. Introduced in 2007 with 88,000 titles and more than a hundred best sellers, the Kindle has defined the e-book industry. Kindle devices have become thinner, lighter and brighter, and the book selection continually increases (more than one million by 2015). Titles are searched and purchased on the Kindle and immediately downloaded via Amazon's WhisperNet via Wi-Fi or cellular, depending on model and geographic area. Newspapers and magazines are sent overnight for morning reading.

Featuring models with 6" and 10" screens, Web access and music playback on earlier models was later dropped (all of which are available on Kindle Fire tablets). The Kindle's monochrome E Ink display enables the battery to last up to a month. See Kindle Fire and E Ink.

Users are assigned a email address, which lets them email Amazon their own Word, PDF, text and image files as attachments for downloading to their Kindles. PRC and MOBI files can also be sent to the device (see Kindle e-book formats).

Whispersync for Other Devices
In 2009 and 2010, Amazon introduced Kindle apps for the PC, Mac, iOS and Android devices, and the Kindle Whispersync service synchronizes all of them. Pages are automatically bookmarked, and users pick up in one device where they last stopped in the other. See e-book and Mobipocket.

First Generation
Although nearly an inch thick, the first Kindle was an overnight success and out of stock for months. This shows The New York Times downloaded on the device. (Image courtesy of

Third Generation Kindle
In 2010, at less than nine ounces and a third of an inch thick, the smaller, lighter Kindle could hold 3,500 e-books.

The Kindle Paperwhite
In 2012, Amazon introduced the Paperwhite e-reader with a greatly enhanced display (left). See Kindle Paperwhite.

At the Beach
In bright sunlight, where LCD screens become almost invisible, the Kindle's E Ink display is easily read. See E Ink.
References in periodicals archive ?
Kindles do download and update to the latest version of the software automatically, but as many Kindles are used only periodically, they may have disconnected from their wireless networks and so need to be updated manually.
Amazon has warned owners who have the original Kindle Paperwhite and every Kindle made before 2012, must update their software by 22 March or lose Internet connectivity.
We purchased our Kindles directly from Amazon as the price is relatively universal with no real discounts available elsewhere.
Some consider this an improvement, while others will miss Kindles with E-Ink, which can be read in full sun and is said to be easier on the eyes.
This year saw "the best holiday ever for the Kindle family as customers purchased millions of Kindle Fires and millions of Kindle e-readers," the Seattle-based online retail giant said in a statement.
com Now Selling More Kindle Books Than Hardcover Books
There has been a lot of excitement generated over Amazon's digital reader Kindle -- and the prospect that people will pay for digital delivery.
On-line retailer Amazon Inc (Nasadq:AMZN) on Thursday introduced a new Kindle app tailored for Windows 8.
International Kindles can be ordered online at amazon.