Boss Audio Marine Gauge Style Radio - MP3/AM/FM/BlueTooth MGR450BThe Boss Audio MGR450B Marine Gauge Style Radio utilizes bluetooth technology to allow for audio streaming straight from your smart device. Preset EQs allow you to chose from preset stations for a variety of music styles. The unit is fully marinzed, integrating high tech waterproofing with special UV plastic coatings for a durable and long lasting audio receiver. The built in USB port allows you to easily charge your device while in use. The tuner function allows AM/FM stations to be played. Feature: Fully marinized; Bluetooth streaming; Auxillary Port; AM/FM tuning; USB charging port; Specifications: Total Power Output: 240W (60w x 4 Channels); Tuner Preset: 12FM / 6AM; Chassis Type: Gauge; Width: 4.5"; Height: 4.5"; Depth: 3.325";