Panasonic DMW-MS2 Stereo Shotgun Mic - Not Impressed - YouTube
Amazon.com : Panasonic DMW-MS2 Directional and Stereo Microphone for DMC-GH3K Body (Black) : Camera And Camcorder Viewfinders : Electronics
Amazon.com : Stereo Microphone (Shotgun) with Windscreen & Dead Cat Wind Muff for Panasonic Lumix & Video (Alternative to Panasonic DMW-MS2) : Electronics