... /wall-hung accessory 1set/Disk 1pcs Specifications1.Interactive dual-writing Whiteboard. 2. Infrared technology, Green Material. 3. ... users in different areas.Support multi whiteboards connect, support writing, drawing, operation, video play, audio ,etc resource sharing ... free write with different colors, different pen width, different pen styles. With spotlight, camera, amplify glass, mask, record, ...