Headunit Receiver:
Bluetooth Wireless Audio Streaming & Hands-Free Calling
AM/FM, 30 Station Memory
USB Flash & SD Memory Card Readers
Aux (3.5mm) Input
LCD Digital Display Panel
ID3 Tag Song Readout for Artist Name/Song Title
Illuminated Front Panel Button Controls
Equalizer (EQ) Electronic Audio Configuration
Automatic Memory Preset Store/Scan Mode
Repeat/Random Song Functions
Remote Control Included
4" Speakers:
Weather-Resistant Design
Cut-Out Diameter: 3.7'' inches
Total Speaker Depth: 1.5'' -inches
Mounting Depth: 0.9'' inches
Power Output: 100 Watt MAX (50 Watt RMS)
Impedance: 4 Ohm
Frequency Response: 90Hz-18khz
4-Channel Amplifier:
Built-in Bluetooth
Waterproof Marine Rating IP-01
Dual RCA (L/R) Input Connector Jacks
Adjustable Input GAIN Level Control
Output Power: 100 Watt x 4 MAX
Amplifier Class: AB
Fuse Type: 20A
Input Gain Impedance Adjustment: 1 - 300mV
Frequency Response: 15Hz - 30kHz +/-3dB
Input Impedance: 10k Ohms (Low), 100 Ohm (High)
Input Sensitivity: 250mV (Low), 2.5V (High)
T.H.D.:
S/N Ratio: 95dB
Power Supply: DC 12V
Matching Speaker Impedance: 4-8 Ohms
Dimensions (L x W x H): 8.0'' x 7.9'' x 2.0''
Other Included Accessories:

Enrock EM18G50FT-OFC Marine Grade Spool of 50 Foot 18-Gauge Speaker Wire

Enrock EKMR1 Marine Universal Wired AM/FM 22" Radio Antenna

Enrock EMCWT1 Marine Universal In-Dash Water Resistant Waterproof Tinted Radio Shield White Receiver Cover