ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR Videos and games come to life with less stutter or blur for more realistic play with smooth 5 milisecond gray-to-gray response time. 5 HP LE1901wi 19-inch Widescreen LCD Monitor, 48.3 cm (19"), 1440 x 900 pixels, 5 ms, Black HP LE1901wi 19-inch Widescreen LCD Monitor. Display diagonal: 48.3 cm (19"), Display resolution: 1440 x 900 pixels, Response time: 5 ms, Viewing angle, horizontal: 160°, Viewing angle, vertical: 160°. Product colour: Black