Color/Finish: Black Design Details: Rugged Bluetooth Streaming Multi-Element Audio System. Ipx5 Marine Rated Speakers Meet The Demands Of Outdoor Environments. Sealed Speaker Connectors. Wired Remote Control. Swivel Design To Direct Music To The Sweet Spot. Add A Subwoofer Soundbar Or More. Full-Range Rca Auxiliary Input And Output. Frequency Response: 120Hz-20Khz. Usb 1A Port. Rated Power: 4 X 20W. Includes: 4 Enclosed Speakers. 4 Vehicle Mounting Brackets. 4 Speaker Cables With Connectors. Bluetooth Amplifier. Wired Remote Control With Mounting Hardware. Materials: Plastic Measures: 18.39In Long X 12.83In Wide X 8.27In High Imported Contents Of Set: 4 Enclosed Speakers, 4 Vehicle Mounting Brackets, 4 Speaker Cables With Connectors, Bluetooth Amplifier, Wired Remote Control With Mounting Hardware