Package Includes:
(1) Rockville RGHR45 4 Zone Marine Gauge Hole Receiver Bluetooth/Radio/Wired Remote
(2) Pair Rockville RWB90W White 8" 300w Marine Wakeboard 360° Swivel Tower Speakers
HOW TO USE AND SET UP YOUR RGHR45:
Features:
Rockville RGHR45 Weather Resistant Gauge-Hole Digital Media Receiver with 4 Zones that each have independent volume control
Includes wired remote with the ability to control the volume in each zone
3” TFT color display makes it easy to navigate
Built in Bluetooth/USB/AM/FM playback
Fits into a standard Gauge-Hole (Tachometer) Opening
Built-in 72 x 4 Watt Peak high powered amplifier (28 x 4 RMS)
3 pairs of pre-amp outputs
4 zones each with volume control (zone 1 = built in amplifier, zone 2 and 3 are RCA outputs, and zone 4 is the sub output)
Built in EQ with preset EQ curves (Pop, Classic, Rock, Jazz, Beat, Flat)
IP66 Waterproof Certification (Tested to withstand the elements)
USB Input to play back audio files store on a USB thumb drive or any other USB device
USB plays video
RCA A/V input to play back a video source
Rear camera input
RCA Aux Input
AM/FM Radio Built In with 18 FM and 12 AM presets + US and European tuning
Bluetooth built in to stream audio from any Bluetooth enabled device
USB Input Charges Your Phone
Big easy to use buttons
Back-lit 3 inch TFT display
IP66 waterproof level
meet ASTM B117 and ASTM D4329 standards
Humiseal coated PCB board for waterproofing and protection from the elements
Required cutout: 2.99" (diameter) x 4.96" (depth) x 4.53” (top plate diameter)
6.24 inch depth included the top plate
USB is 500mA and 5V and supports 16GB max
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
Owner's Manual
Video of RWB:
WARNING: 
