Radio FM/AM,USB/MP3 Player, Bluetooth Wireless Music: 1) Radio, 12 FM/MW Radio presets allows you to preset your favorite radio and listen to it directly next time. 2) USB input available for Connecting MP3 players or flash drive. 3) Bluetooth Wireless Music:Directly listen the music wirelessly on your Bluetooth Device; Waterproof Level: IPX66: Hit the water and enjoy your music with the marine grade stereo. With an IPX6 Rating and ASTM 117 salt/fog standard, solid aluminum chassis, state-of-art weatherproofing materials and UV coatings, this radio is protected from the elements. Easy to Install and fully compatible: 1)Product Dimensions (L x W x D): 6.1??(155mm) x 4.1??(105mm) x 1.57??(40mm) 2)Installation Dimensions(L x W x D): 5.5??(140mm) x 3.54??(90mm) x 3.14??(80mm) 3)It is compatible for many ATVs, UTVs XP900, Powersports Vehicles, Boats, Heavyduty Car Vehicles, even in SPA rooms. 4 channels x 45 watts Built-in Power Audio Amplifier: Use the best audio amplifier to rock the music on t