Motorcycle FM Mp3 Amplifier Waterproof Speakers Anti-theft Alarm Audio Stereo PlayerDescription:Waterproof speakersSupport FM radio and the USB TF cardSupport to input external audio signalMP3 music playerAnti-theft alarmRemote controlSpecification:100% brand newColor: BlackMateial: Metal + hight quality plasticPower Supply: DC 12VPower Consumption: 2 x 7W18 preset stationsSize: As picture shownPackage box size: about 14.7cm(L) x 9.5cm(W) x 8cm(H)Fitment: Compatible with nearly all 12V MotorcycleOperations:1. Glitterthe indicator will keep on and glitter when playing MP3.2. TF card socketInsert a TF card to automatically play songs in corresponding formats.3. Aux-in socketUsed to input external audio signal.4. USB socketRead information on USB via a USB extension cable. Insert a USB to automatically play songs in corresponding formats.5. Remoter indicatorWhen the remoter sends signal、 the indicator will flicker once.6. Alarm\/Power offAfter connecting to power supply、 press this button once to turn on the alarm(ring for once); press this button once again to turn the alarm off(ring for twice).In radio state、 press and hold this button to power the device off.7. Power-on\/Pause\/Mode1) After connecting to power supply、 press this button to power it on.2) In radio state、 press this button to close audio output; press this button again to restore the original volume level.3) In MP3 playing state、 press this button to pause; press this button again to cancel the pause function.4) In any state、 press and hold this button to switch modes in order. (TF-Audio-AUX-USB)8. Previous\/Search previous station\/Vol-1) In radio state、 press this button to search the previous station semi-automatically; press and hold this button to decrease volume level.2) In MP3 playing state、 press this button to select the previous song; press and hold this button to decrease volume level.9. Next\/Search next station\/Vol+1) In radio state、 press this button to search the next station semi-automatically; press and hold this button to increase volume level.2) In MP3 playing state、 press this button to select the next song; press and hold this button to increase volume level.Wiring diagramBlue - Radio antennaYellow- Remoter receiving antennaBlack - Negative pole of the batteryRed (with 3A protective tube) - Positive pole of the batteryRed+Black - to horn connectorThis product renders fluent audio playing effect with such medium of FM automatic tuning、 USB and TF card、 as well as advanced audio processing chip. To give full play to this device、 please read the manual in details before using!Note:1. Please check the size measurement chart carefully before making payment.2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3. The color of the actual items may slightly different from the listing images due to different computer screen、 thanks for your understanding.4. Instruction is not i