RCA, Bluetooth, Auxiliary, USB. Surround Sound Channel Configuration. USB, 3.5mm Jack. 14.02 x 10.94 x 10.87 inches. PACKAGE BUNDLE INCLUDES: Pyle PLMRB29W Receiver, 4 x Pyle PLMRS4W 4 Speakers, Pyle PLMRA410BT 4-Channel Amplifier, Enrock EMCWT1 Radio Cover, Enrock EM18G50FT-OFC 50 Foot 18-Gauge Speaker Wire, Enrock EKMR1 Radio Antenna. Radio cover included for protection! 4 SPEAKERS: These Pyle PLMRS4W marine speakers are constructed with aluminum materials and other durable substances for a rugged sound system. The speakers are also waterproof to withstand water and weather resistant to combat sun damage. 4-CHANNEL AMPLIFIER: This Pyle 4-Channel bluetooth marine amplifier is the perfect audio amp system to boost your sound to the next level. Providing 400-watts of max power and a durable marine-grade construction. SPEAKER WIRE/RADIO ANTENNA: The Enrock marine speaker wire is water-resistant, so it’s ideal for use in your new marine installation. The rugged Enrock EKMR1 marine soft wire universal antenna gives you performance and durability. Bluetooth Wireless Audio Streaming & Hands-Free Calling. 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. 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). Dual RCA (L/R) Input Connector Jacks. Adjustable Input GAIN Level Control. Output Power: 100 Watt x 4 MAX. 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). Power Supply: DC 12V. Matching Speaker Impedance: 4-8 Ohms. Dimensions (L x W x H): 8.0” x 7.9” x 2.0′. Enrock EM18G50FT-OFC Marine Grade Spool of 50 Foot 18-Gauge Speaker Wire. Enrock EMCWT1 Marine Universal In-Dash Water Resistant Waterproof Tinted Radio Shield White Receiver Cover. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.