Califone Wireless Tablet Interface enables wireless operation up to 50 ft away and helps expand your flexibility as well as creativity during computer-based presentations. Tablet comes with a pen, USB receiver and a 3ft USB cord. The tablet interface features keys on the left side that enable it to be used as a mouse on a PC by touching the pen to the tablet surface. The left side buttons control the desktop feature including, up/down/left/right/ok arrows, mouse left/right keys, page up/down keys, Alt + Tab, clear/close/esc keys and red pen/screen mode. The right side software functions include show/hide whiteboard, red pen to draw on whiteboard/desktop, blue pen to draw on whiteboard/desktop, multi-color pen, eraser, magnify, focus and resize the window, blank screen, hide upper and lower parts of the screen, clock/timer, record whiteboard session, snapshot of the current screen and a dialog box to adjust settings.