The th8667mis b1ag is an 86 20 point touchscreen with integrated interactive easinote writing software allowing users to make annotations on files opened directly from a usb device or internal storage the 4k 3840 x 2160 resolution offers a gigantic viewable area with 4 times more information and work space than a full hd screen the display supports also playback of presentations video and almost any other type of content stored on the usb device or internal memory the high qual