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 Stereo Material: Aluminum alloy, ABS Battery Model: CR2025 x 1 (built in) Battery Capacity: 300mAh Compatible Formats: MP3 IF Range: 10.7MHz Usable Sensitivity: 15db Load Impedance: 4 x 4Ω Signal To Noise Ratio: 50db Stereo Separation: 30db (1KHz) Tone Adjustment: ±8db Audio Output: 2ch and 4ch Line Out Maximum Output Level: 1.5Vrms (±3db) Frequency Response: 20Hz-20KHz Signal To Noise Ratio: 60db Separation: 50db Radio Frequency Band: FM 87.5-108MHz, AM 522-1620KHz Features: Dustproof and waterproof, high definition, bluetooth, lossless music Fitment: 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 Harness Note: