Boss Audio In-Dash Marine Gauge Digital Media Bluetooth Audio Streaming AM/FM Receiver. MGR450B In-Dash Marine Gauge Digital Media Bluetooth Audio Streaming AM/FM ReceiverMGR450B Marine Gauge MECH-LESS Multimedia Player (no CD or DVD) Receiver with Audio Streaming Specifications for Boss Audio MGR450B In-Dash Marine Gauge Digital Media Bluetooth Audio Streaming AM/FM Receiver: Manufacturer: Boss Audio Color: Blue Black Features of Boss Audio MGR450B In-Dash Marine Gauge Digital Media Bluetooth Audio Streaming AM/FM Receiver USB Port USB Charging (A1) Aux-In Compatible with Audio Output of iPod/iPhone Smartphones and MP3 Players Front Pre-Amp Output Rear/Sub Pre-Amp AM/FM Receiver Bluetooth Audio Streaming IPX6-Rated Wired Remote Ready In-Dash Black Package Contents: Boss Audio MGR450B In-Dash Marine Gauge Digital Media Bluetooth Audio Streaming AM/FM Receiver Boss Audio MGR450B: In-Dash Marine Gauge Digital Media Bluetooth Audio Streaming AM/FM Receiver MGR450B