Interactive Display Hisense HN75WR80U: 75", 4K, TouchInteractive Digital Display (Interactive Digital Board)Panel Backlight: D-LEDPanel Size: 75’’Resolution: 3840 x 2160Brightness: 400cd/m?(typ.)Contrast(typ): 1200:1 (typ)Viewing angle: 178°(H) / 178°(V)MTBF: 30000Hrs(min)Control Method: IR RemoteOperating System: Android 8.0Speaker: Built in speaker: 2x15W/8?Connectivity: WIFI: 2.4G/5G, LAN: 10/100Mbps RJ45*1, USB: USB 2.0*1 USB3.0*1Bezel Color: Black. Housing Color: BlackSet Dimension(WxHxD):1720?1048?105mmNet Weight: 52kgVESA: 600*400mmSet composition: Remote controller inc batteries, Stylus Pen x 2, Wireless Cast x 1, Wall Mount Bracket x 1Optional (not included): Mobile Cart (MC086C), Wireless Screen Transmiter (HT002A), OPS Kit (S02BDS7AA21E)