The microphones utilize a special pressure sensitive, tension less low-mass element enhanced with an integrated FET low noise preamplifier. These characteristics result in ultra smooth frequency response providing excellent feedback stability for teleconferencing. The microphones feature a waterproof windscreen to protect the element from cleaners, coffee, and other liquids.The Group teleconferencing in conference rooms and boardrooms,in classrooms and training/briefing rooms, with extraneous noises such as paper shuffling and pen clicking are minimized. Portability - whereby microphone may be easily moved around, exceptional coverage area minimizes the number of microphones required there center of table placement permits participants to turn in their chairs and move around.The low profile design actually uses the table surface to increase its effectiveness, precisely captures original sound allowing listeners to recognize 'who is talking'.