... 1PCS/wall-hung accessory 1set/Disk 1pcs Specifications1.Interactive dual-writing Whiteboard. 2. Infrared technology, Green Material. 3. ... 29 Languages Choice. 4. Finger touch.Interactive dual-writing Whiteboard 1). Software updates quickly and freely Our powerful ... users in different areas.Support multi whiteboards connect, support writing, drawing, operation, video play, audio ,etc resource sharing ...