IP66 Marine Bluetooth Stereo 10.8-15.6V DC input 2" Crystal Display MP3/WMA playback Bluetooth Audio Streaming AM/FM Tuner, 18 preset stations 4x50watt max power USB port AUX input RCA output SUB output Gauge Mounting with U bracket Required cutout: 2.89" (diameter) x 2.84" (depth) Wireless remote control