Interactive Digital Display (Interactive Digital Board) Panel Backlight: D-LED Panel Size: 75’’ Resolution: 3840 x 2160 Brightness: 400cd/m²(typ.) Contrast(typ): 1200:1 (typ) Viewing angle: 178°(H) / 178°(V) MTBF: 30000Hrs(min) Control Method: IR Remote Operating System: Android 8.0 Speaker: Built in speaker: 2x15W/8Ω Connectivity: WIFI: 2.4G/5G, LAN: 10/100Mbps RJ45*1, USB: USB 2.0*1 USB3.0*1 Bezel Color: Black. Housing Color: Black Set Dimension(WxHxD):1720×1048×105mm Net Weight: 52kg VESA: 600*400mm Set composition: Remote controller inc batteries, Stylus Pen x 2, Wireless Cast x 1, Wall Mount Bracket x 1 Optional (not included): Mobile Cart (MC086C), Wireless Screen Transmiter (HT002A), OPS Kit (S02BDS7AA21E)