Headunit Receiver:

Bluetooth Wireless Audio Streaming & Hands-Free Calling
AM/FM Stereo Radio, 30 Station Memory
USB Flash & SD Memory Card Readers
Aux (3.5mm) Input Connector Jack
Connect & Stream Audio from External Devices
MP3 Digital Audio File Playback
LCD Digital Display Panel
ID3 Tag Song Readout for Artist Name/Song Title
Equalizer (EQ) Electronic Audio Configuration
Automatic Memory Preset Store/Scan Mode
Repeat/Random Song Functions
Remote Control Included
6.5" Speakers:
6.5'' High Quality Polypropylene Cone
Resin Treatment Surround
Water-Resistant Construction
400 Watts Rated Peak Power
Frequency Response: 65Hz-20K Hz
4 Ohm Impedance
Sensitivity: 90dB
4-Channel Amplifier:
4-Channel Audio Amplifier
4-Channel Marine Audio Amplifier
Bluetooth Receiver for Wireless Music Streaming Ability
USB Flash & SD Memory Card Readers
MP3 Digital Audio File Compatibility
LCD Digital Display Screen
RCA (L/R) Audio Connectors
Spring-Loaded Speaker Terminals
Connect & Stream Audio from External Devices
Volume, Bass, Treble Rotary Controls
Built-in Thermal, Overload & Speaker Short Protection
MAX Power: 400 Watt (100W x 4)
Amplifier Type: Class-D Circuit
Marine Grade Rating: IP-41
Impedance: 4 Ohm
Frequency Response : 10 - 40kHz
S/N Ratio: > 95dB
Other Included Accessories:

Pyle Marine Grade Speaker Wire - 50 feet - 18 Gauge
Enrock EKMR1 Marine Universal Wired AM/FM 22" Radio Antenna
Enrock EMCWT1 Marine Universal Radio Shield White Receiver Cover