* Wireless with built-in paintbrush and laser pointer function
* By pressing right key can draw arrow/ellipse//rectangle// straight line on the screen.
* No need the table
* It can zoom in & zoom out on the screen, pictures or PPT and write down any signs,
* Be good for presentation, lecture, teaching, business meeting, home theatre and so on.
* Built-in replaceable battery
Desktop Computer, Notebook Computer