Marine Audio Radio Car Bluetooth Stereo Waterproof Receiver for ATV UTV RV Yacht. Type : One PCS Audio Unit. One PCS Audio Unit. Type : Audio Unit + 4 inch Black Round Speakers+ Black Antenna. One Pair Black 4 inch Round Speakers. One PCS Black Antenna. Package: One PCS Audio Unit One Pair White 4 inch Round Speakers One PCS White Antenna. Type : Audio Unit + 6.5 inch White Round Speakers+ White Antenna (SKU: NW-306-065W-056W-US). Package: One PCS Audio Unit One Pair White 6.5 inch Round Speakers One PCS White Antenna. Marine Audio Boat Radio Bluetooth Stereo Receiver USB Digital Media Player, Support AUX Output, AUX Input For Yacht ATV UTV. We developed this to give you the best sound and the best features! Highly efficient even when running at 2 ohms! Low distortion even at top volumes. Crazy loud: We put in a built in amplifier that is louder than other marine receivers on the market. The RMS power of the built in amp is 28 watt x 4 channels! It is crazy loud and can be heard over the sound of the wind when you are on the water! There is also a built in EQ to customize the sound to your taste. Latest listening features: The GR305 gives you many listening options. Our Bluetooth distance is 50 feet! There is also a USB input allowing you to listen to music stored on a thumb drive. You can plug in any audio device to the auxiliary input. There is a built in radio with crystal clear reception as well. Ability to connect multiple external amps: This receiver makes your system expandable. Two sets of pre-amp outputs allow you to hook up external amps for your speakers. This has front and switchable rear outputs so you can amplifiy your speakers and a subwoofer amplifier. Features: Fits into a standard gauge -hole (tachometer) opening Built-in 724 watt peak high powered amplifier (284RMS) Built-in EQ with preset EQ curves (pop classic the elements) IP66 Waterproof Certification (Tested to withstand the elements) USB Input to play back audio files store on a USB thumb drive or any other USB device. 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.