III. Display Screen Performance Parameters
  

   

    

     
 size
     
 65 inches
    
    

     
 Response time
     
 8ms
    
    

     
 aspect ratio
     
 16:9
    
    

     
 Display size H*V mm
     
 14 29.7mm x 8 04.7mm
    
    

     
 Resolution
     
 4K@60Hz , 3840(H)×2160(V)
    
    

     
 Refresh rate
     
 60Hz
    
    

     
 Color saturation
     
 1.07B (10-bit)
    
    

     
 Color gamut NTSC (Typ)
     
 72 %
    
    

     
 Contrast (Typ)
     
 12 00:1
    
    

     
 Viewing angle
     
 178°(H/V)
    
    

     
 Tempered glass types
     
 The surface has an AG anti-glare treatment and a surface hardness of 7H.
    
    

     
 Backlight type
     
 D - LED
    
    

     
 Screen brightness (Typ)
     
 350 cd/m² ±10% ( Typical value at the nine-point center )
    
    

     
 Lifespan
     
 ≥ 30,000 hours
    
   
  
  
 Note: The peak brightness of the device will vary depending on the LCD glass model used. The information provided in this specification is for reference only!
  


  

   
 Ultra-thin and robust design: It adopts an all-aluminum alloy frame structure, an ultra-narrow bezel and a lightweight design, and is equipped with Mohs 7H high hardness explosion-proof tempered glass and AG anti-glare coating.
   
 High-quality display and touch: Supports full-channel 3840x2160p true 4K UHD display, adopts pure zero-bonding process, and achieves ±1mm millimeter-level high-precision infrared touch writing.
   
 Intelligent light-sensing adjustment: Supports ALS light-sensing function, which can automatically adjust the screen brightness according to the ambient light to provide an eye-friendly experience.
   
 Convenient front-panel interface: Multiple front-panel USB 3.0, HDMI, Type-C and Touch 2.0 ports, with support for automatic switching between channels, eliminating the need for frequent plugging and unplugging of external devices.
   
 Powerful connectivity features: Supports 2.4/5G dual-band WiFi and Bluetooth 5.0, has independent AP+STA dual-mode working mode, and supports RJ45 wired network connectivity, allowing Windows and Android systems to connect to the network simultaneously.
   
 Android 11/13 system: Equipped with Android 11.0 or 13.0 operating system (T982 main chip, 4GB RAM + 32GB ROM), with a wealth of educational and office software, such as whiteboard, file management, welcome sign-in wall, etc.
   
 High-speed wireless projection: Supports 5G WiFi high-speed AP hotspot function, and the wireless projection app can be optionally configured to support up to 9 screens in split-screen mode.
   
 Standardized OPS support: Supports the Chinese OPS-C standard 80-pin interface, facilitating the expansion of PC computer modules (i3/i5/i7 optional), with a maximum load power of 95W.
   
 High-quality sound system: Equipped with CH2.0 immersive speakers (2×8Ω 15W), and optional CH2.1 channel configuration with subwoofer.
   
 Environmentally friendly and energy-saving: The power consumption of the whole machine (65-inch) is ≤250W in standard mode and ≤0.5W in standby mode, which meets modern energy-saving standards.