The PNL851H/751H/651H AQUOS BOARD® interactive display systems are made for show and tell in the digital age. Whatever screen size you choose—85", 75", or 65" Class (84 9/16", 74 1/2", or 64 1/2", diagonally respectively)—you get pristine 4K Ultra HD resolution. With a pre-installed controller and built-in whiteboard and wireless functionality, they are always ready for a quick meeting. The touchscreen supports up-to 20 touch points at a time. You can use either a finger or the bundled touch pen, which gives a Pen-on-Paper® writing experience. Your group collaborations just got more seamless and intuitive.