Red Light Pointer - This Presentation Clicker Strictly complies with IEC-60825-1 safety standard; The red light pointer is clearly visible against most backgrounds. Not recommend for LED LCD TV screens Long Control Range - This presentation remote uses advanced data loss control algorithms for greater reliability. You can move freely within a wireless range of up to 328 feet (100 meters). Its performance advantage will be more prominent in large room presentations Featured Functions - Support PowerPoint Hyperlink - This pointer for presentations can help you to choose, open hyperlinks in your PowerPoint and close the active window. It's a ideal clicker for powerpoint presentations; Support Volume Control Customizable Key function - You can reconfigure the key's function via Norwii Presnter software. By customization, this powerpoint clicker can be personalised to meet individual functionality needs and is compatible with a wider range of presentation software