PACKAGE BUNDLE INCLUDES: Enrock EM856 Gauge Mount Media Center Marine Grade Receiver, 4 x Enrock EKMR408B Audio Systems 4" 3-Way Indoor/Outdoor Box-Speakers (Black), Enrock Universal USB/3.5MM Auxiliary Interface Mount, Enrock Flexible Rubber Mast Long-Range Marine Boat/Yacht Radio Antenna (Black).

Multimedia Receiver:

• Compact Gauge-Style Design
• Marine-Grade
• Peak Power: 4 x 40 Watts
• RMS Power: 4 x 25 Watts
• Built-In Amp: 25 W x 4 RMS Power
• Rear USB/AUX Inputs
• USB/AUX for use for external audio devices
• USB adapter will charge your phone (charger not included)
• Built-In Wireless Audio Streaming
• 1-Inch Screen Size
• Front/Rear RCA Out
• AM/FM Tuner
• Marine-Grade IP66 Rated
• Water-Resistant
• Frequency Response: 100-10kHz
• Signal to Noise Ratio: 40dB
• Input Sensitivity: 500mV
• Outer Trim Ring Diameter: 4.5"
• Protrusion From Mounting: 1.16"(29.54mm)
• Mounting Depth: 2.75"(70mm)
• Fits in Standard Tachometer Opening

Box Speakers:

• 4" three-way indoor/outdoor box speaker
• Woofer: 4 inches
• Tweeter: .79 inches
• Peak power: 30 Watts per Speaker
• RMS power: 15 Watts per Speaker
• Nominal impedance: 8 Ohm
• Frequency response: 100Hz - 20kHz
• Sensitivity: 85 dB 2.83v @ 1 Meter
• Dimensions: 8.18 H x 4.72 W x 5.43 L
• Weight: 2.8 pounds

Auxiliary Interface Mount: 

• UV-resistant
• USB to RCA 10" pass-through extension cable
• 1.5" through-hole mount
• Dustproof water-resistant rubber cover
• Use with any radio with rear USB/RCA inputs
• Cable Length: 3m

Radio Antenna:

• Marine AM/FM antenna
• Flexible Mast AM/FM Marine Antenna
• 180 degrees Swivel base for maximum mobility
• 45-Inch cable
• Designed for marine use only
• Angled mounting options allows for versatile installation
• Corrosion resistant for the marine environment