ON THE WAYRF2.4GHz Wireless PPT Presenter Mouse Remote with Powerpoint Remote Control Laser Pointer Simple and easy to use,Avoid interference, support hyperlinks.AFTER-SALE SERVICE:90 days refund service without any bother. A plug-and-play wireless receiver; Wireless Technology: 2.4 GHz; Battery Not Included A red laser pointer that's easy to see against most backgrounds, highlight key areas of your slides Buttons: laser pointer, display of black screen, next, previous, full screen, on/off switch; One-touch keys easy to control slideshow Wireless remote control distance range of up to 39 feet (12 meters), so you can free to move around the room and interact with your audience