car mp3 alarm motorcycle anti-theft audio car anti-theft system features: 1, the host with a usb interface and sd card slot, turn the power to read the music files automatically; 2, the host with the power and memory, ie, normal or abnormal power-down modes, mp3 can automatically timely memory playback tracks and volume of the current moment, the next player start playing from the beginning of this track; 3, with a wireless remote control, the use of the fr signal remote control, remote control mp3 playback / stop and volume; 4, with anti-theft alarm function. if you are interested, please contact us model: wd-f product name: motorcycle sound matching: a host, high quality waterproof speaker pair, the remote control is a fixed iron plates two screws 8, power cable one. plug in the sd card or u disk can play supports mp3 playback ultra-small motorcycle audio, host size of business cards so much! host built-in mp3 decoding, usb interface, connecting u disk or mp3, mp4, mp3 files play inside. the remote control may not be at the machine switching machine the first volume the size of the upper and lower control, control the range of less than 100 meters, the host also has control buttons two-channel power of 2 * 10w can adjust the volume the speaker for the 2 * 10w host power supply for 12v output frequency response: 20hz-20khz operating temperature :0-60 degrees celsius with audio output can be connected amplifier or subwoofer the set includes a remote host a pair of 3-inch waterproof speaker relatively clear set of stereo sound speakers waterproof can be mounted in any position host small installation, and the power consumption is relatively low. installation ---- host followed by two positive and negative wires to the car speakers, host connection to plug in the sd card or u disk in the car you can listen to mp3! with radio function radio frequency: 87.5mhz-108mhz