Description: The MB Quart GMR-MIC is a simple waterproof source unit microphone solution designed to mount in a standard switch or accessory location. Features & Benefits: 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 3.5mm audio mini jack connection Details & Specs: Color: Black Warranty: 1 Year IPX Rating: IP67 Accessory Dimensions: Hole Cut Out (in): 0.8 Wide x 1.3 Height (Standard Carling Switch Knock Out), Unit Dimensions (in): 1.625 High x 0.25 Depth x 1.0 Width Accessory Additional Specs: Microphone to 3.5mm audio mini jack Proposition 65 Notice: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov