Open-Box: Minor cosmetic marks, Scratches on back of the unit, complete set. Professionally inspected, fully operational. * ---LG 49UH5N-E Commercial Monitor ---49" 3840 x 2160 4K UHD IPS LCD Display ---Aspect Ratio - 16:9 ---Max Brightness - 500 cd/m2 ---Contrast Ratio - 1100:1 ---Dynamic Contrast Ratio - 1,000,000:1 ---Response Time - <9 ms ---Refresh Rate - 60Hz ---Display Orientation - 30° Downward Angle, Landscape, Portrait ---WiFi 5 ---Ambient Light Sensor - Yes ---Built-in Speakers - Yes ---Smart TV - webOS 6 ---Storage - 6GB ---Mounting Hole Pattern - 300 x 300 mm ---Duty Cycle - 24 Hours / 7 Days.