... All in one pc63 inch interactive whiteboard, large size touch display, digital whiteboard,build-in PC, touch all-in-one,SCREEN PROPERTIES ... Visual angle:179° TOUCH FEATURESS(I-63P-BS)Touch technology:infrared detection technology Touch mode: finger, pen, or any other ... technology MultiTouch:yes integrate mode:built-in Touch mode: finger, pen, or any other non-transparent objects 63inch ...