XIANQI Presentation Clicker with Red Light Pointer--The Powerpoint clicker boasts rf 2.4ghz wireless presenter with highly-sensitive signal without interference from others and can work well within as far as 100 meters. The built-in pointer satisfies national standards for office and classroom. The light is bright and steady to see clearly on any screens (not recommended for LED, LCD) even across a large conference hall. Great Range Responsiveness--With a wireless range of up to 228ft (70m) and pointer range of 656ft (200m), this presentation clicker allows you the freedom and flexibility to move away from the screen to engage with the audience. It can not only be a clicker for powerpoint presentations but a pointer for pet chasing (Do not shoot directly at eyes of people/animals). Broad CompatibilityThe presentation clicker is compatible with diverse systems: Windows 2003/XP/Vista/7/ 8/ 10, Mac OS (an easy set-up may be needed for mac), Linux, Android. It supports various software: PowerPoint, Google Slides, iWork (Keynote Numbers Pages), Prezi, PDF, MS Office, ACD See, Website, etc. and fits most laptops, presentation electronic whiteboards, projectors, especially helpful for students, teachers, tutors, lecturers, and speakers. Easy to Plug Play--No need to do any special setup. Just put in an AAA battery (not included in the package), fetch the receiver (fits USB 1.1/2.0) under battery cover and plug it into your devices. Small and lightweight, the powerpoint clicker is comfortable in your hand and easy to store. Responsive Buttons-- As a presentation clicker, it has standard buttons like page up/down, black/full screen switching, etc. The one-touch buttons are well placed and you dont have to look down to advance the presentation. With the pointer button held on, the pointer works well flawlessly and effectively. The power switch to turn off after use helps save batteries.