On May 6, 2009, Amazon announced the Kindle DX, which retails for $489. It is the first Kindle model with an accelerometer, automatically rotating pages between landscape and portrait orientations if the device is turned on its side, unless automatic rotation is disabled by the user. It is slightly over 1⁄3 inch (about 8.5 mm) thick, has a 4 GB (3.3 GB user-accessible) storage capacity, holding approximately 3500 non-illustrated e-books, a 9.7 inch (24.6 cm) display with 1200 x 824 pixel resolution, and a battery life of up to one week while using wireless or two weeks offline. The DX adds support for PDF files natively, built-in stereo speakers and 1xRTT wireless technology as a fallback option for when EVDO connectivity is not available. Like the Kindle 2, it does not have an SD memory card slot. The model was released on June 10, 2009. more about Kindle DX Wireless Reading Device (9.7" Display, Global Wireless, Latest Generation) click here
