Human engineer design with black color and circular base. 28'' WLED backlight with wide display equipment. Ultra HD 4K(3840x2160) display, provide huge display area, high resolution, show you the high definition image. sRGB Cover Wide gamut and 8-bit color. Support 3 inputs ports: Displayport*1, HDMI*1, VGA*1. Response Time: 5.5 ms. Screen Size 27.9'' (659.7x391x49.3 mm). Brightness 300 cd/m². Contrast: 1000: 1. Active area: 620.93(H) x 341.28(V) mm.