General Features: marine/powersports digital media receiver (does not play CDs) 3-1/2" full-color LCD display with day/night modes AM/FM/Weather Band tuner with RDS control four separate audio zones built-in Bluetooth with aptX codec 1.0 amp USB input charges your device while it's in use rear AUX input works with a variety of digital devices Expandability SiriusXM-Ready (tuner, antenna, and subscription sold separately) 8-channel preamp outputs (no built-in amplifier) connect up to three JL Audio MMR-20 remotes (sold separately) Marine Features: weatherproof (IP66-rated) design and construction large controls are ideal for marine/powersports applications intuitive interface with large text for easy legibility while in motion