... CABLE 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 ... glass, mask, record, save, playback, print, email, etc. 80" Interactive dual-writing Whiteboard