Newmen Laser Pointer for presentation, 2.4GHz USB Wireless Presenter Remote Clicker with Red Light for Powerpoint and Keynote WIRELESS PRESENTER: Use 2.4 GHz wireless technology and USB 2.0 connection. Laser up to 30 meters wireless range, so you can free to move around the room and interact with your audience. RED LASER: Red laser pointer of this presentation pen is easy to see against most backgrounds, highlight key areas of your slides. PLUG AND PLAY: Mini USB receiver supports plug and play technology. USB receiver stored conveniently in the base of the pointer when not use. Powered by 2AAA batteries (Included) SUPPORT OPTIONS: Support Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Mac 10.7. No driver is required. FUNCTIONS: Basically page up /page down /play slides /black screen for PowerPoint presentation and keynote; About laser pointer: hold down the button to keep the light on.