The MB Quart GMR-MIC is simple source unit microphone solution designed to mount in a standard switch or accessory location.
 
Compatible Vehicle Fitment: Universal
Compatible Product Models: MB Quart and Universal Source Units
Marine Grade Protection/ IPX Rating: Sealed components that protect connections from the elements - IP67
Installation: Universal installation for standard carling style switch knock outs. 
Other Features: 3.5 mm audio mini jack connection