Open-Box: Flawless display, no defects. Like new, complete set. Professionally inspected, no signs of use. * ---NEC Commercial Display ---75" 3840 x 2160 4K UHD IPS LCD Display ---Aspect Ratio - 16:9 ---Max Brightness - 500 cd/m2 ---Contrat Ratio - 8000:1 ---Refresh Rate - 60Hz ---HDR Support - HDR10, Hybrid Log Gamma ---Built-in Speakers - Yes, 20 x 10 watt ---Duty Cycle - 24 Hours / 7 Days.