Nano Interactive Blackboard factory This 86 inches nano blackboard has a unique appearance br display effect good br writing is clear and smooth br easily erased clean br\ This 86 inches nano-blackboard is suitable for the field of education br\ The 86 inch nano blackboard full viewing angle displays with ultra-high contrast and freshness features bright colors, stylish and beautiful design, precise touch control, and smooth use, allowing you to immerse yourself in the digital world! Product detail: Size: 86 inches Resolution: 3840*2160 Perspective: full perspective Screen brightness: 350cd/m虏 Screen color: 16.7M Contrast: 5000:1 Backlight Type: D-LEDNano Interactive Blackboard factory website:http://www.ctv-touch.com/smart-whiteboard/nano-interactive-blackboard/