Boat Bluetooth Stereo System unit with 4 Marine Waterproof Speakers for Yacht. 1PCS x Radio/mp3 Unit. 1PCS x Wire Cable. 1PCS x Install Bracket with nuts. 1PCS x English Instruction Manual. 2PCS x Waterproof Speakers. USB Features: Support MP3 Fits in Gauge Opening. Power supply: DC 12V. Radio Response Bandwidth: US AND EUR. Meets ASTM B117 salt/fog standard. Installation Depth = 1 5/8 not including wires. Installation cut out = 3. Outside dimension = 3 1/2. Dimension(W x D x H):3x 1 5/8. Outside Diameter: 124mm (4.88). Mounting Hole Diameter: 115mm (4.52). Mounting Depth: 35mm (1.37) Impedance: 4 Ohm. Frequency Response: 100Hz – 18kHz. Molded ABS Plastic Basket. Magnet Material: 3.4oz. Magnet Protection: Plastic Water Guard. Application:Boat, yacht, SPA, swimming pool, ATV, UTV. While enjoying your music with this Weatherproof Gauge Media Player. Bluetooth technology lets you stream audio apps like Spotify and Pandora. Change up the sound with the built-in Preset EQ. With an IP66 Waterproof Level, state-of-the-art weatherproofing materials and special UV protection coatings, the player resists corrosion and is protected from the elements. Keep your tunes flowing with the unit. This unit is rated IP66 which means water splashing against the enclosure from any direction shall have no harmful effect. High-tech, state-of-the-art waterproofing materials plus special UV coatings for plastic surfaces, coated circuit boards and connections ensure these marine and outdoor products are corrosion resistant and protected against harsh elements. Audio Streaming and Aux Input. Wirelessly stream audio via Bluetooth from compatible devices so you can listen to streaming music services through your system. The Aux Input allows you to connect to the audio output of an external device such as an MP3 Player or smartphone so you can enjoy your music through your system. USB Port and USB Charging. Supports USB flash drive files up to 32 GB for music playback on units without monitors and music playback on units. Charge USB connected devices through the built-in 1A charger. No CD Mechanism and Built-in Preset EQ. Our units without a CD mechanism are ideal for listening to digital media files from USB drives, and external devices such as smartphones through the auxiliary input. The built-in Preset EQ allows you to choose from preset EQ curves for a variety of music styles such as Rock or Pop. The selectable tuner function allows you to adjust this receiver’s tuner to receive radio broadcasts in either the US or Europe. Input Types: Bluetooth, USB, AUX. Bluetooth: long distance music Streaming. Car, motorcycles, yacht, fishing boats, cuddy cabins, ski boats, the unit is also perfect for spa pools, quad bikes, golf carts, UTV, ATV and RV. 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.