Wireless Remote Control ButtonsDisplay& black screen, next, previous, full screen, presenter on/off switch; Large button and One-touch keys is easy for you to control slideshow; Hold down the middle laser button to keep the light on. Widely Compatible DeviceThe presenter clicker supports software: MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote & Numbers & Pages) etc; Support systems: for MacBook on OS, Windows, Android, PC; Just plug the USB receiver into laptop and start your slideshow. EASY TO USEPlug& play, just plug into the USB receiver, the light on the USB is flashing light, install the battery and press the on/ off switch button, the USB light will become solid and then the red laser can normally light when you hold on the button. 39ft Wireless Remote Control DistanceWireless remote control distance range of up to 39-foot, so you can free to move around the room and interact with your audience. The bright red laser pointer that's easy to highlight key areas of your slides( dont recommended use with the LCD). Environmentally Friendly ABS PlasticsScientific ergonomic design and smooth appearance; A plug-and-play wireless receiver; Wireless Technology: 2.4GHz; PACKAGE: 1xWireless Presenter remote, 1xUltra-Slim Wireless Receiver, 1xUser Manual,1 x AAA Battery Not Included; Provide replacement or refund if there are some issue with the PPT clicker.