DU 12V Waterproof Bluetooth MP3 Player Anti Interference Digital Stereo FM AM Audio Radio for Marine Boat Yacht Motorcycle RV DU 12V Waterproof Bluetooth MP3 Player Anti Interference Digital Stereo FM AM Audio Radio for Marine Boat Yacht Motorcycle RV Specification: Item Type: MP3Player Material: Aluminum Alloy, ABS Battery Model: 1 x CR2025 (shipped with built in battery) Battery Capacity: 300mAh Compatible Format: MP3 IF Range: 10.7MHz Available Sensitivity: 15db Load Impedance: 4 x 4 Signal to noise ratio: 50db Stereo Separation: 30db (1KHz) Tone Adjustment: 8db Audio Output: 2ch&4ch Line Out Maximum Output Level: 1.5Vrms (3db) Frequency Response: 20Hz-20KHz Signal to noise ratio: 60db Separation Degree: 50db Radio Frequency Band: FM 87.5-108MHz, AM 522-1620KHz Features: dustproof and waterproof, high-definition Bluetooth, lossless music Suitable models: yachts, construction vehicles, excavators, forklifts, trucks, van and other vehicles How to Use: Yellowwire,redwiretopositive,blackwiretonegativetostart.Therestoftheharnesscorrespondingtotheharnessinstructionsconnected Package List: 1 x Bracket 1 x Wire Harness 1 x Remote Control 1 x Double Sided Adhesive 1 x Player 1 x Instruction Manual 1 x Fused Harness 1 x Screw Gasket Accessories (6PCS)