... !It is so simple anyone can do it.Digital stylus and digital pen with functions such as click,double click ... bluetooth Transmission distance <20m Transmission rate 480(Mbps) Writing Digital Pen,Digital Stylus Effective writing range >99% Max Resolution 12600*12600 ... system Windows XP/Vista/Win7 Display system The projector, LCD TV, LCD monitor Interactive media Screen, metope, ordinary whiteboard, ...