The Milennia MIL-PRV16 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. Sized to match existing gauge holes, the Milennia MIL-PRV16 is great for retrofit or OEM applications. Operates at 4 x 40 watts. Solid aluminum chassis and IP-66 salt fog rating for durability. 1-5/8" mounting depth not including wires. Requires 3" dia. cutout. 3-1/2" outside dia. Ideal for smaller fishing boats, cuddy cabins, and PWCs, the Milennia MIL-PRV16 multimedia receiver is also perfect for ATVs, golf carts, RVs, and more.