Compatible with audio output of iPod /iPhone , smartphones and MP3 players. Fully marinized. High-power max output. Bluetooth audio streaming. Easy pairing with auto-reconnect. In-line, multifunctional control.. Waterproof poly-injection cone. Soft-dome diaphragm, high-performance tweeter. 3.5mm aux-in. Speakers powered by internal amplifier. Plug-and-play for easy installation. Includes two heavy-duty zip ties and two heavy-duty straps with Velcro for any mounting position. ATV SOUND SYSTEM Bluetooth Enabled All-Terrain Sound System