31.5-inch 4K UHD (3840 x 2160) resolution display with IPS 178° wide viewing angle for sharp and immersive visuals.Response time:4.0 milliseconds Aspect Ratio is 16:9; Viewing Angle (CR≧10, H/V) is 178°/ 178°; Brightness (Typ) is 350cd/㎡ Support HDR-10 to enhance bright and dark area, delivers lifelike viewing experience Adaptive-Sync technology to animated content with fast action and eliminate screen tearing ASUS Eye Care monitors feature TÜV Rheinland-certified Flicker-free and Low Blue Light technologies to ensure a comfortable viewing experience Supports both Adaptive-Sync with NVIDIA GeForce* graphics cards and FreeSync with AMD Radeon graphics cards *Compatible with NVIDIA GeForce GTX 10 series, GTX 16 series, RTX 20 series and newer graphics cards