Dahua HiBoard 65-inch ELed 4K UHD module has Attractive appearance: Narrow border design at three sides, and delicate decoration and breathing light at the lower side. Multiple functions, including wireless projection, electronic whiteboard, file management, fingerprint unlock, multiple themes available, etc. Optional OPS module, compatible with mainstream OPS in the market. Supports projection via mobile phone, PC, and Mac. Supports 8-channel access and simultaneous display of 4-channel data. Dahua smart interactive whiteboard adopts high-performance CPUs, GPU, advanced storage configuration, and Android 8.0 system to ensure its powerful processing capability. Equipped with the high-precision infrared frame of 2mm recognition diameter and 4K HD ELED module, the smart whiteboard can provide extraordinary experience in the aspects of writing, controlling, and demonstration. The smart whiteboard integrates various functions and features, such as multifunctional writing, wireless projection, conference content sharing, etc. The high performance and multiple functions make the whiteboard an ideal choice for occasions where demonstration, information sharing, and documentation management are needed, such as conference rooms, classrooms, and lecture halls, etc. Viewing Angle of 178° horizontal, 178° vertical. Protective Glass: Anti-glare tempered glass, with surface hardness of Mohs 7. Operating System: Windows 7/8/10, Android. Built-In Speaker 2x 10W.