MSI Optix MAG281URF 27.9" 144Hz 4K UHD 1ms HDR400 G-Sync IPS Gaming Monitor - G-Sync Compatible - Panel Size: 27.9" - Panel Resolution: 4K UHD (3840 x 2160) - Refresh Rate: 144Hz - 1ms Response Time - Rapid IPS Panel - Brightness: 300 cd/m2, 400 (peak) - Aspect Ratio: 16:9 - Contrast Ratio: 1000:1 -