Premium 27-inch QHD OLED gaming monitor with 240Hz refresh rate, ultra-fast 0.03ms response time, HDR True Black 400, and vivid OLED colour performance.Koorui S2721XO 27" OLED Black Monitor (2560x1440/0.03ms/2xHDMI/DisplayPort.Premium OLED panel with exceptional contrast and colour depth.High refresh rate support for ultra-smooth visuals.