The 2.4GHz Wireless Laser Pointer releases the user from the computer. It supports page up and down, moving the cursor up and down, hyperlink, switching the window, full screen, black screen, play / pause, volume control and red laser. Just gently press the relevant function button, you can control your ducuments whether you are in the corner of the lecture hall or the classroom, or in the back of the conference room. You can simply press the laser button and a red point will appear to emphasize the contents you need to highlight on the screen. It is a good assistant for teacher, trainer, professor, emcee, business man and more.