Motorcycle Bluetooth Speaker with MP3 Player FM Transmitter Waterproof Audio for Helmets Features： 1、FM electronic tuning radio, large frequency range. 2、Intelligent electronic search, user-friendly design. 3、Super waterproof function, allows to use in rainy weather. 4、High output power, 15 preset stations for you to choose freely. 5、With time display, MP3 external interface, 3.5mm ear plug interface. Specification： With this motorcycle radio, you can listen to radio and music while driving a motorcycle. As it mainly features radio function, you need an external MP3 for music listening. It has an MP3 interface and is suitable for all MP3, MP4, mobile phone with 3.5. MM interface. Features: FM electronic tuning radio, large fre quency range. Intelligent electronic search, user -fri endly design. Super waterproof function, allo ws to use in rainy weather. High output power, 15 preset station s for you to choose freely. With time display, MP3 external interface, 3. 5m m ear plug interface. Specifications: Condition: Brand New Material: Aluminum Color: Shown as picture FM Frequency: 87.5 - 108.5 (± 0.55MHz) Sensitivity: ≤26dB Distortion Ratio: ≤0.5% Signal-to-noise Ratio: ≥58dB Max Capacity: 2 * 6W Resistance: 4 - 8Ω Working Voltage: DC 12V Size: Approx.20*6*6cm/7.9*2.4*2.4in Package Weight: Approx.609g/21.5oz Package List: 1 * Motorcycle MP3 Music Player 1 * Hex Screwdriver 1 * English User Manual Package List：