Receiver Digital Media GR10BT for AM/FM/WBDigital Media Receiver Installs into 3-inch Marine Gauge Hole. Features: AM/FM/WB, Bluetooth®, USB, Aux Input Water Resistant (IPX5 front, IPX3 rear)Global AM/FM + Weatherband TunerBluetooth® Music StreamingMP3/WMA USB File Playback, with 1.1A charging output (rear USB port)Auxiliary Audio RCA Input (rear)Built-In Amplifier: 4 x 16W RMS @ 4 ohms (<1% THD+N at 14.4V)Four 2V RCA outputs (Front + Rear or Sub)3-Band Equalizer (Bass/Mid/Treble), plus seven EQ presets