Holiday 2014 - Lenovo LI2821 28" 4k Monitor; 28" 16:9 aspect ratio LED Backlit TN 3840 x 2160 (UHD 4k) 300 nits 1000:1 contrast ratio 10000000:1 dynamic contrast ratio 72% color gamut 170 /160 viewing angle Anti-Glare coating 5ms response time 60Hz refresh rate 1.073G display colors; 1080p webcam; Dual-Array microphone; 1 up 2 down USB 2.0 1x HDMI 1X MHL Display Port VGA Kensington lock headphone jack microphone jack; HDMI Cable DVI Cable USB Cable Audio Cable; 100x100mm VESA mount; Energy Star 6.0; Picture in Picture / Picture by Picture; Black / Graphite