The Amazon Kindle Paperwhite B007MHZJ14 display offers 62% more pixels, and renders exceptionally sharp, clear text and images. Paperwhite guides light towards the display from above instead of projecting it out at your eyes like back-lit displays, thereby reducing screen fatigue. You can adjust your screen's brightness to create a perfect reading experience in all lighting conditions, from bright sunlight to bedtime reading. Kindle Paperwhite 3G's screen has 25% higher contrast. Crisp, dark text against a brilliant white background makes for the perfect read. A single charge lasts up to eight weeks, based on a half hour of reading per day with wireless off and the light setting at 10. Our breakthrough power management technology allows you to leave the light on at all times for the best possible contrast without sacrificing battery life.