Crest the waves while enjoying your music with the boss audio MGR450B weatherproof gauge Mech-less digital media player. Turn on the weather band/am/FM radio, hook up your smartphone or MP3 player through the auxiliary Input or plug into the USB port to charge or play USB-connected devices. Bluetooth technology lets you stream audio apps like Spotify and Pandora. Change up the sound with the Built-in subwoofer control and preset EQ. With an IPX rating of 6, state-of-the-art weatherproofing materials and special UV protection coatings, the MGR450B resists corrosion and is protected from the elements. Keep your tunes flowing with the boss audio MGR450B.