85 Inch Conference All-in-One Multimedia Electronic Whiteboard Touch Screen Interactive Wisdom Training Blackboard Display. 4K Ultra HD Resolution: 3840x2160 resolution with 16:9 aspect ratio and 178-degree viewing angle. 20-Point Infrared Touch: 20-point multi-touch capability with 6ms response time and 88% transmittance. Dual OS Support: Runs Android 12.0+ and Windows 7 Professional with optional OPS mini computer. Comprehensive Connectivity: Includes HDMI, VGA, AV, USB 3.0/2.0, RJ45, and SD card slot interfaces. High Brightness Display: LCD panel with 350-450cd/m2 brightness and 5000:1 contrast ratio. Built-in Audio System: Integrated 2x10W speakers with microphone input support. Anti-Glare Protection: Optional anti-glare glass with 4mm thick standard tempered glass surface. Customization Services: Supports LOGO, SDK, PCBA customization and flexible design options.