**2.4G universal channel, 360 control. **Automatic Frequency Hopping technology avoids other RF signal interference. **Supporting plug and play, this presenter has good compatibility with USB1.1, **USB2.0, USB3.0. You are in control of your PowerPoint no matter which direction you face or which corner in a room you stand. **Soft Silica Gel buttons allow for comfortable use. Storable receiver for easy carrying. Support functions including Page up and Page down, Fullscreen, Black screen. **Supports Windows7/ 8/ 10/ Linux/ Android/ Mac OS. Used for Word, Excel, PowerPoint, Keynote, Prezi ACD See, website, iWork, and Google Slides. 868M innovative technology is not affected by 2.4G signals such as Bluetooth WIFI, and the signal is accurate and not malfunctioning. U disk function 32G, mass storage of courseware Material; ABS+PC Power: 0.5mW size138.8mm*17.6mm*15mm Presentations from up to 100 meters away Package Included: 1x USB RF Wireless Presenter #PPT #PowerPoint #Control #Controller #Pen #RedLaser #Presenter