Have you ever wanted to blast "I'm On a Boat" while sailing on the lake, but your current speakers just won't cut it? Look no further than the Sony DXS M5511BT Marine Package for all your stereo essentials. This package includes a Bluetooth enabled digital receiver and two speakers. The receiver is equipped specifically for marine use, with UV resistant coating and a coated circuit board. The speakers are also UV and salt resistant, so you won't have to worry about the music cutting out if you make a splash. Use Bluetooth to connect to your smartphone so you can crank up all your boating jams or use it to pick up phone calls without taking your hands off the wheel. The Sony DXS M5511BT Marine Package is sure to make your days on the lake a bit more musical than they were before.