HiLONGWAY Pocket Interactive Whiteboard (Model:801i) FEATURES, 1 Workable for any smooth surface(Wall, blackboard,whiteboard,etc.) 2 No AC power needed 3 Diagonal size adjustable freely 4 Auto Calibration 5 Easy carrying 6 Remote Control 7 Touch Control 8 Wireless 9 Multi-languages. 500g.