21.5" Wide Color a-Si TFT Active Matrix LED 18.7" horizontal x 10.5" vertical, 21.5" diagonal * Full HD LED 1080p 1920 x 1080 resolution * 2ms ultra-fast response time. Built-in 2W x 2 stereo speakers * 50M: 1 ultra-high dynamic contrast ratio * HDMI input with VESA mount