interactive whiteboard smart board

The Touch Screen Smart Whiteboard Built-in professional whiteboard writing software can be performed on the screen , no delay in writing , deducing , zooming , moving , etc . The smart whiteboard also can be erased with back o f the hand , smooth and smooth . Dual System Windows 10 OS Intel core i3/i5/i7 option,  Memory 4G/8G/16G option  Hard Disk: 128G/256G/512G/1T option Android OS Quad core, 3G RAM, 32G ROM, Android 8.0/9.0 version LCD Panel Size 55 inch/ 65 inch / 75 inch / 85 inch / 98 inch Available Panel Brand LG、BOE、AU (gauge A screen) type TFT-LCD S-PVA Resolution 3840 × 2160 (UHD) @60hz, 4K UHD screen Brightness…