Chaohong is located in Zhengzhou Airport Economic Zone, which is China's first National Airport Economic Comprehensive Experimental Zone. The local government gives our factory the greatest support. Backlight category, DLED Aspect ratio, 16:9 Resolution, FHD(1920*1080 Pixels) Viewing angle, H:178/V:178 Operating voltage, 100V-240VAC 60/50Hz Audio Power output, 10W+10W Interface, HDMI*2/USB*2/VGA/ATV/YPbPr/PC-Audio/Audio-IN/Earphone Display Technology-LED Number of HDMI Ports 2 Total USB Ports 2 Total VGA Ports 1 Speaker Built In