JBL's PRV-175 marine digital media receiver will change the way you listen to music on your boat — without forcing you to modify your vessel. This multimedia receiver packs a lot of features into a compact design that fits into a standard tachometer opening. You'll enjoy AM/FM radio, of course, plus built-in Bluetooth® that lets you stream music from your smartphone. You can also use the rear aux input for your music player, or plug a thumb drive into the rear USB port to enjoy your favorite music. Features: marine digital media receiver (does not play CDs) built-in Bluetooth® for music streaming built-in amp (20 watts x 4 RMS/45 peak x 4 channels) marine-rated watertight face fits into a standard tachometer opening inputs: rear USB input, rear aux input outputs: 2-channel preamp outputs required cutout: 3.365" (diameter) x 3.3125" (depth)