HOLKOI-01N LED Interactive Touch Panel is an intelligent writing panel With a triple-sided ultra-narrow bezel design, sliding door lock protection and 4K UHD display, it’s equipped with interactive whiteboards and wireless screen casting software in a man-machine Interaction way, enabling an interactive mode with multiple users and inter-connectivity, enriching presentation and enhancing the communication atmosphere. FEATURES 75" Interactive Panel size 20 points touch 4K UHD resolution Panel OS: Android 14.0, 4G RAM, 32G ROMmm) Backlight Type LED (DLED) Resolution(H×V) 3840×21 60 (UHD) Color 1 0 bit 1 .07B Brightness 550cd/m2 Contrast 4000:1 (according to panel brand) Viewing angle 1 78° Display protection 4 mm tempered explosion-proof glass Backlight lifetime 50000 hours Speakers 1 5W*2 / 8O