... mp3 speaker mp3, fm radio,security alarm ,wireless remote usb,sd card slot used for motorcycle, motor-tricycle ... radio+security alarm system+wireless remoteUsed for motorcycle, scooter, motor-tricycle, auto rikshawBuilt in USB,SD card slotMusic broadcast ... inchesSpeaker's color choice: Blue,Red,BlackWith high sensitivity wireless remote controlWired control (Optional )Technology Data:Voltage: ...