Combo USB – “A” Jack with 3.5mm Aux input and extension cable (Male RCA) for dash mount
Description:
USB “A” female socket with 3.5mm “AUX” input
rubberized cover 
extension cable terminates in male RCA left/right
Marinized for marine or outdoor use
Designed for mounting on dash or helm
Mounting plate included
Drill/cut a 28mm hole for mounting