Display Diagonal sizes 55" Backlight LED Resolution 1920*1080/3840*2160 pixels Display ratio 16:09 Touchscreen Touch surface material Tempered-glass Touching technique IR Touch points 10 points in windows Writing tools Fingers, writing pen and brush pen Positional accuracy 2mm Architectures Insert PC Standard Intel OPS Loudspeaker Maximum output power Front 2*15W Microphone arrays Directivity Omnidirectional Adapterization range 8m Quantity 4 pieces Camera Position Bottom x1 Viewing angel 86° Resolution 1920*1080p at 30fps (max) Port I/O port Supports HDMI, USB, VGA, input and output Power Power consumption Rated power