Feature:1. Strong Compatibility: Compatible for IOS, for Android, for Windows system devices, enjoy the system networking, and compatible with various APP playback.2. Lossless FLAC Format Stereo: Supports music in FLAC lossless format, compatible formats are popular, music downloads are simple and easy, and true surround sound effects.3. Stable Transmission: The Bluetooth signal has an effective transmission distance of 10 meters, which is stable and free from interference.4. Multi Playing Experience: Using Bluetooth playback, U disk playback, a set of AUX input, a set of RCA output, a set of SUB subwoofer output, lossless song playback.5. Anti Interference: Digital radio IC module, signal amplification, can also search for radio stations in remote mountainous areas. Automatic search and manual fine tuning mode, automatic storage of FM channels.Specification:Item Type: Marine Radio StereoMaterial: Aluminum alloy, ABSBattery Model: CR2025 x 1 (built in)Battery Capacity: 300mAhCompatible Formats: MP3IF Range: 10.7MHzUsable Sensitivity: 15dbLoad Impedance: 4 x 4Signal To Noise Ratio: 50dbStereo Separation: 30db (1KHz)Tone Adjustment: 8dbAudio Output: 2ch and 4ch Line OutMaximum Output Level: 1.5Vrms (3db)Frequency Response: 20Hz-20KHzSignal To Noise Ratio: 60dbSeparation: 50dbRadio Frequency Band: FM 87.5-108MHz, AM 522-1620KHzFeatures: Dustproof and waterproof, high definition, bluetooth, lossless musicFitment: Yachts, engineering vehicles, excavators, forklifts, trucks, vans, etc..Package List:1 x Marine Radio Stereo1 x Bracket1 x Remote Control2 x Long Screw4 x Short Screw2 x Nut2 x Washer1 x HarnessNote: