Capacitive Smart Board Interactive Whiteboard , 4K USB White Interactive Board

Capacitive Touchscreen Interactive Whiteboard For Smart Class / 4K USB Powered Touch Screen Basic Info Panel Size: 55",65",75",85" LCD Screen Display Area: 1428.48mm(W) X 803.52mm (H) Aspect Ratio: 16:9 MAX Power : 160W Resolution: 3840x2160 Life Span: >60,000 Hours Visual Angle (H/V): 178/178 ̊ Brightness: 450 Cd/m2 Specification: China factory Cheap 65"75' 84' 4K usb powered touch screen monitor,infrared sensor large touch screen for Education,Business etc. Model Nu