Barnes & Noble
Barnes & Noble Nook is an electronic book reader created by the company, based on the Android platform.  The device was announced in the United States on 20 October 2009. It was released 30 November 2009 for US$259. nook competes with the Amazon Kindle, Sony Reader, and other readers, and includes Wi-Fi and AT&T 3G wireless connectivity, a six-inch E Ink display, and a separate, smaller color touchscreen that serves as the primary input device.