The Clear-Com GM-18 gooseneck microphone features a gold-plated and threaded 6.35mm/0.25" jack connector and is 450mm/18" long. The unidirectional electret condenser microphone element has side and rear rejection of greater than 6db between 100Hz and 10kHz. For Encore stations and ICS panels (Other than ICS-1008E and 1016E). Includes a fitted windscreen.