Add a little something extra for the ultimate entertainment experience. JENAUX allows you to listen to your external storage device or iPod/MP3 player to the stereo using this waterproof port USB Interface & 1/8" Auxiliary Input Jack Waterproof design USB port allows for connection of external storage device 1/8" audio jack allows input of any MP3 player or external audio device Audio connector (RCA) 10 ft. Cable Length For use with any stereo with USB capability and/or auxiliary audio inputs ASTM B117 Salt Spray Exposure Standard Compliant ASTM D4329 UV Exposure Standard Compliant Through hole mount with threaded housing and knurled securing nut Mounting Hole: 1.5" Dimensions: 1.89" Diameter x 1.18" Depth