Tuner Section FM Stereo Frequency Area US, Europe. Bluetooth: long distance music Streaming. RMS Power Output: 4 x 60W. Power supply: DC 12V. Meets ASTM B117 salt/fog standard. Input Types: Bluetooth, USB, AUX. Outputs: 1 pair RCA Pre-Amp Out. Mounting Hole Diameter: 115mm(4.52). Mounting Depth: 35mm/(1.37). Frequency Response: 120Hz – 20kHz. Grill material: UV Plastic. Magnet Material: Ferrite, 4oz. Magnet Protection: Plastic Water Guard. Application:Boat, yacht, SPA, swimming pool, ATV, UTV. The Guzare N-056B Marine Wire Antenna provides excellent radio reception signals to the audio system on your automobile, watercraft vehicles. The corrosion-resistant rubber exterior confirms that it will stand up to salt and spray. A quality antenna is the crux of reliable performance in any marine radio. Marine Rubber Radio Antenna. Waterproof and resists corrosion. Perfect for boats and campers. 13.3inch Long Mast. Hello friend, we will send you the corresponding Audio Package according to your options. At the same time, if you are not satisfied with the current set of boxes, we also have different accessories and hosts for you to choose from. Marine Audio Package(GR-305 – 4001B – 056B). 2 Pair 4inch White Waterproof Speakers. 1 Pair 4inch Black Waterproof Speakers. All items will be tested in advance before sending out. We will offer replacement without extra charger after we receive the defective item. Due to the recent lack of logistics transportation capacityOnly for orders ordered from Friday evening to Sunday, and logistics and transportation are normal from Monday to Thursday. GUZARE marine series of head units and remotes are fully tested against UV radiation degradation as well as tested to IP66 water intrusion standards. We also fully test the stereo units for every changing environmental conditions that you may experience on the boat or out in the dunes such as temperature extremes, as well as vibration testing to make sure they can take a bump and keep performing as a high standard product. If you are dissatisfied for any reason, please do not be quick to leave negative/neutral feedback. Our working time: Monday to Friday.