Logitech R400 presenter with Keynote on Mac works | Pim's Blog
Logitech R400 Remote Presenter Setup on Mac and Troubleshooting on Mac - YouTube
StarTech.com Wireless Presentation Remote with Red Laser Pointer - 90 ft. - PowerPoint Presentation Clicker for Mac & Windows (PRESREMOTE) - Wireless presentation clicker has wireless range of up to 90 ft. -