Brand New Sealed Unit * ---Elo 6553L Digital Signage Display ---65" 3840 x 2160 4K UHD LCD Touchscreen Display ---Aspect Ratio - 16:9 ---Brightness - 430 cd/m2 ---Contrast Ratio - 1100:1 ---Response Time - 8 ms ---TouchPoints - 40 ---Refresh Rate - 60Hz ---Built-in Speakers - Yes, 2 x 10 watt ---Mounting Hole Pattern - 400 x 400 mm & 600 x 600 mm.