... Screen with belt,USB port, plug and play.add on LCD, Support two fingers touch at a time when workingWIN7 DualTouch ... which make touch screen is more easily installed on the LCD. 6. competitive cheap price. Though it is dualtouch screen, ... confrerence system*Command center*Mall kiosks*Public venue directory*Interactive advertising*Hotel entertainment center*Weather forecast Dualtouch screen21.5'' for ...