SSV Works WP-RZFO4 Polaris 4 seat RZR800 and XP900 BLUETOOTH 4 Speaker Overhead Stereo System BLUETOOTH Enabled On board bezel mounted rubberized controls excellent sound quality from the weatherproof marine speakers, Includes Built in AM/FM Tuner Ultra Efficient 50x4 Low Power Consumption Digital Amplifier provides incredible clarity while not straining the charging system on your Side by Side Vehicle Durable Fiberglass construction for maximum sound quality and zero resonance, Black Texture coat finish matching your vehicles interior finish Simple 15 Minute 2-wire installation, All stainless steel mounting hardware and installation instructions are included