Rockville RGHR-ZA Marine Gauge-Hole 4-Zone Bluetooth App-Control Receiver + 4 MB QUART Speakers

What's in the box: Marine digital media receiver, wired remote with zone controls, USB extension cable (40 inches), mounting screws for installation, waterproof wiring harness for installation, Owners manual and warranty card. Overview: The Rockville RGHR-ZA is a weather-resistant gauge-hole (tachometer) digital media receiver with app control and four independent zones. The included wired remote gives per-zone volume control, and the free app for Android or iPhone lets you manage zone volumes, choose tracks, select sources and more. Navigation is handled on a 3” TFT color display that is back-lit and easy to read, with big, easy-to-use buttons. Audio sources and I/O: Built-in Bluetooth, USB, AM and FM playback (18 FM and 12 AM presets + US and European tuning). USB input plays audio files from a USB thumb drive or other USB device and also plays video; USB also charges your phone (USB is 500mA and 5V and supports 16GB max). RCA A/V input for an external video source, RCA Aux input, and rear camera input are provided. Zones, outputs and processing: Four zones with individual volume control (zone 1 = built-in amplifier, zones 2 and 3 = RCA outputs, zone 4 = sub output). Three pairs of pre-amp outputs. Built-in EQ with presets: Pop, Classic, Rock, Jazz, Beat, Flat. Amplifier details: Built-in 72 x 4 Watt Peak high powered amplifier (28 x 4 RMS). Specs of the built in amplifier: TDA7851L quadbridge power amplifier. 4 x 72 watts peak @ 2 ohm. 4 x 48 watts peak @ 4 ohms. Highly efficient even when running at 2 ohms! Low distortion even at top volumes. Durability and certifications: IP66 Waterproof Certification (tested to withstand the elements). Meets ASTM B117 and ASTM D4329 standards. Humiseal coated PCB board for waterproofing and protection from the elements. Installation dimensions: Fits into a standard Gauge-Hole (Tachometer) Opening. Required cutout: 3" (diameter) x 4.96" (depth) x 4.5" (top plate diameter). 5.75 inch depth including the top plate.