[Multifunctional Touch] 2.4 GHz RF wireless technology, built-in dock for packing the usb receiver. 1 x AAA battery NOT included
[Bright Red Light] Easy to see against most backgrounds; Up to 39-foot wireless range for free to move around the room
[Strong Compatibility] Supports MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote & Numbers & Pages) etc; Windows 2003, XP, Windows Vista, Windows 7, Windows 8 (above), Linux, Mac OS, Android; For MacBook on OS, plug the usb receiver into laptop, it will come out a box, and then you can select 101 or 104 option
[Presentation Clicker Buttons] Page Up (long press full screen/ Esc full screen), Page Down (long press black screen/ esc black screen) , On/Off Switch
[More Support] We provide free Lifelong Technical Support. ※※If you have any problem when using the PowerPoint presentation clicker, please contact us