... dual-writing Whiteboard. 2. Infrared technology, Green Material. 3. 29 Languages Choice. 4. Finger touch. Interactive dual-writing Whiteboard 1). Software ... a net to orientation. No radiation, no need special pen, easy use and safety.Frame: aluminum, durable (8years ... Free design,free write with different colors, different pen width, different pen styles. With spotlight, camera, amplify glass, mask ...