Buttons: light pointer, display of black screen, next, previous, full screen, on/off switch; One-touch keys easy to control slideshow; About pointer: hold down the button to keep the light onSUPER BRIGHT RED PRESENTATION REMOTE CONTROL : presenter is Easy to See on any Presentation Screen(Not Recommended for LED, LCD Screens). Note:PLS Do Not Directed at People or Animals Eye, Please Use it Properly.EASY OPERATION, UNIVERSAL COMPATIBILITY: just Plug and Play, this PPT Clicker Supports MS Word, Excel, PowerPoint, ACD See, iWork (Keynote & Numbers & Pages) Google Slide,Compatible with Windows Linux, Mac OS, Meet Different Laptops, Presentation Electronic Whiteboards , Projectors. Especially for Teachers, Tutors, Lecturers and Speakers, It Helps a lot.Widely Applicable: Presentation pointer support systems: Windows 2003/ XP/ Vista/ 7/ 8/ 10, Mac OS, Linux, Android; pointer presenter support software: PowerPoint, Google Slides, iWork (Keynote & Numbers & Pages), Prezi, PDF, MS Word, Excel, ACD See, Website, etc.HIGH QUALITY PRESENTATION CLICKER: More than 10 years of Wireless Presenter Developing ExperienceMilitary Level Signal, Highly Sensitive(RF 2.4GHz Wireless Automatic Frequency Hopping Technology Avoids other RF Signal Interference),Long Control Range can be up to 228 ft(70 metersIn an Open Environment),You can 360Freely Control your Presentation around Every Corner of your Conference Room, Especially in a Large Space!