Reads Like Real Paper, Even in Bright Sunlight
E Ink screens look and read just like real paper. Kindle, Wi-Fi, 6" E Ink Display e-readers' matte screens reflect light like ordinary paper and use no backlighting, so you can read as easily in bright sunlight as in your living room. Unlike LCD screens, E Ink screens have no glare.
Easy on the Eyes
E Ink uses actual ink particles to create crisp, print-like text similar to what you see in a physical book. And Kindle e-readers also use proprietary, hand-built fonts to take advantage of the special characteristics of the ink to make letters appear clear and sharp.
Source:
http://www.suchacoolgift.com/2012/10/kindle-wi-fi-6-e-ink-display.html