Original: The Kindle 2 features 16-level grayscale display, 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 millimeters).
Simplified: The new Kindle features improved battery life, 20 percent faster page-refreshing, a text-to-speech option to read the text out loud,  and overall thickness reduced from 0.8 to 0.36 inches (9.1 millimetres).