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 戴尔 E1909W, 48.3 cm (19"), 1440 x 900 像素, 5 毫秒, 黑色 戴尔 E1909W. 顯示器尺寸(對角長): 48.3 cm (19"), 顯示器解析度: 1440 x 900 像素, 回應時間: 5 毫秒, 水平可視角: 160°, 垂直可視角: 160°. 產品色彩: 黑色