HIGHROCK RF 2.4GHz Wireless USB PowerPoint PPT Presenter Remote Control Pointer Pen Environmentally friendly ABS plastics; Scientific ergonomic design; A plug-and-play wireless receiver; Wireless Technology: 2.4 GHz; 1 x AAABattery Not Included A bright red laser pointer that's easy to see against most backgrounds, highlight key areas of your slides Wireless remote control distance range of up to 39-foot, so you can free to move around the room and interact with your audience Support options: Supports MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote & Numbers & Pages) etc; For MacBook on OS, plug the usb receiver into laptop, it will come out a box, and then you can select 101or104 option Buttons: laser pointer, display of black screen, next, previous, full screen, on/off switch; One-touch keys easy to control slideshow; About laser pointer: hold down the button to keep the laser on