PORTABLE PRESENTATION CLICKER-Finger ring design is practical, rubber loop is adjustable to fit fingers of different size, makes your hand remains relatively free, easy to carry and no longer misplace your presenter clicker anymore PLUG & PLAY POWERPOINT CLICKER-No need to install software, just plug into the USB to start your presentations(For mac, you may need to complete an easy set-up first). PowerPoint Presenter support page up, page down, black screen, full screen BRIGHT LIGHT & LONG CONTROL RANGE-Bright red light that is easy to see against most backgrounds (Not recommended for LED/LCD screens); Powerpoint remote control range is 40-50FT, light control range is 328FT, so you can free to move around the room and interact with your audience WIRELESS PRESENTER REMOTE SUPPORT-Windows 2003/XP/Vista/7/8/10, Mac OS, Linux, Android; Supported software: PowerPoint, Google Slides, iWork (Keynote & Numbers & Pages), Prezi, MS Word, Excel, ACD See, Website and etc RECHARGEABLE PRESENTER CLICKER-Only requires 1 hour of charging time, support one week of using, support auto sleep function to save power wireless presenter