Acer S200HQL B 20" Widescreen Monitor, Refurbished (UM.IS0AA.001 Black): * 20" diagonal LED screen * 16:9 aspect ratio Widescreen is perfect for viewing 2 documents side by side or for watching movies * 1600 x 900 resolution Enjoy excellent image quality * Colors Capable of displaying millions of colors for realistic photo and video reproduction * 100,000,000:1 dynamic contrast ratio Offers great color resolution * 5 ms response time Delivers exceptional performance that is especially noticeable when playing games and watching videos ENERGY STAR® Products that are ENERGY STAR-qualified prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. The ENERGY STAR name and marks are registered marks owned by the U.S. government, as part of their energy efficiency and environmental activities.