This Gauge-Style AM/FM/USB Multimedia Receiver easily slides into current gauge openings or cup holders, giving boaters everything they want at a great price. This smallest marine stereo ever is portable-media- ready and features AM/FM radio, USB, and aux-in for connecting portable media devices. Operates at 4 x 45 . Solid aluminum chassis and IP-66 salt fog rating for durability. perfect for smaller fishing boats, cuddy cabins, and PWCs, the multimedia receiver is also perfect for ATVs, golf carts, , and more. Uses USB, AM/FM Bluetooth Audio Sources USB Features:Support MP3 Fits in Gauge Opening Power supply:DC 12V Frequency Range: FM:87.5MHZ=108MHZ AM:530MHZ-1710KHZ Radio Response Bandwidth:US AND EUR Waterproof Level:IP66 Meets ASTM B117 salt/fog standard Meets ASTM D4329 Support MP3 Source Type:AM/FM/Bluetooth Enabled Marine Radio Input Types:Bluetooth, USB,AUX IN,RCA OUT Bluetooth:Long distance music Streaming perfect for: Car,motorcycles,yacht,fishing boats, cuddy cabins, ski boats , the unit is also perfect for spa pools, bikes, golf carts,UTV,ATV and RV. Colour:Black Material:Metal+plastic Size:Mounting Hole: 78.5mm,Mounting Depth: 41mm Package Contents: 1 * Bluetooth Audio Sources Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.