New condition, Never used. Box seal is open to check contents.Key Features:Model Number: LU28R550UQNXZAUPC: In-Plane Switching (IPS) Panel2 x HDMI 2.0 | DisplayPort InputsUSB PortHDR10 (1.07 Billion Colors)3840 x 2160 4K UHD Resolution1000:1 Static Contrast Ratio300 cd/m² BrightnessAMD FreeSync178°/178° Viewing Angles4 ms Response Time60 Hz Refresh RateAnti-Static, Slim Bezel, Widescreen, Adaptive-Sync, Anti-Glare, Flat ScreenThis monitor supports both Picture-by-Picture and Picture-Picture viewing modes for enhanced multitasking efficiency.HDR10 content playback support, users can enjoy a dynamic range of bright and dark colors with detailed contrast.AMD Radeon FreeSync technology syncs the display's refresh rate with your graphics card's frame rate output to reduce screen tearing and stuttering for a smoother gaming experience.