YueYueZou&reg; Motorcycle Bike MP3 12V Anti-theft Alarm System Fm USB Sd Stereo Speaker Multifunction Main function: MP3 player, FM radio, security alarm system, wireless remote. Anti-theft Function with Remote Control. 2.5" Shark Bullet Shape Speakers. Support flash drive SD/MMC Card MP3 Music Player. Support FM Radio And the USB TF card. AC cable allows you to play music with your Mobile phone iPods, MP3, and other audio devices. Material: ABS, electronic components. With USB, SD card slot. One Year Warranty Included!