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 DELL E2009W, 50.8 cm (20"), 1680 x 1050 pixels, 5 ms, Black DELL E2009W. Display diagonal: 50.8 cm (20"), Display resolution: 1680 x 1050 pixels, Response time: 5 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 160°, Viewing angle, vertical: 170°. VESA mounting. Product colour: Black