28 inches 4K/UHD (3840 x 2160) with 1ms response time and Adaptive Sync/AMD Free Sync for immersive, crisp visuals featuring Display Port and dual HDMI connectivity; Viewing Angle (CR≧10) : 170°(H)/160°(V) ASUS Eye Care technology lowers blue light and eliminates flickering to reduce eyestrain and ailments. Display colors is 1073.7 M 10 bit and maximum contrast ratio is 1000 : 1. It can allow a Adaptive Sync/Free Sync supported graphics source to dynamically adjust display refresh rate based on typical content frame rates for power efficient, virtually stutter free and low latency display update 5 Way OSD joystick delivers intuitive monitor controls so you can access features such as ASUS Game Plus on the fly. Digital signal frequency for display port is 120 to 120 KiloHertz horizontal, 40 to 60 Hertz vertical. Hdmi signal frequency is 24 to 99 KiloHertz horizontal, 40 to 60 Hertz vertical Compliance and Standards EAC logo, Energy Star, BSMI, CB, CCC, CE, CEL level 1, FCC, PSB, PSE, RoHS, TCO7.0, UL/cUL, VCCI, WEEE, WHQL (Windows 10, Windows 8, Windows 7), RCM, TUV Flicker free , TUV Low Blue Light Exclusive Game Plus and Game Visual settings enhance color performance and control. ASUS Rapid Replacement 3 years warranty service with free cross shipping; Tilt : -5 degree ~+20 degree.Brightness(Max) : 300 cd/?