... screen Model85” Single Pen IWB101” Single Pen IWB85” Dual Pen IWB101” Dual Pen IWBProduct NumberPH-1500-85SPH ... 85DPH-1500-101DTechnologyElectro-Magnetic SensingTouch System PenElectronic Pen (AAA NI-MH Battery)Resolution2000 lines/ ... Colors, Pen colors;Pen Tools Options: Pen, Brush, Flat Pen, Texture Pen, Transparent Pen, Magic Pen. Interactive Whitebaord, Projector Screen, dual pen whiteboard, ...