Feature 1105-115dB super loud, clear and striking, provides powerful warning, not easy to ignore, ensure your driving safety. 2Microphone function, make you express clearly, deal with emergency efficiently. 36 different sound, meet your different needs, you can choose what you want by the controller. Features: 105-115dB super loud, clear and striking, provides powerful warning, not easy to ignore, ensure your driving safety. Microphone function, make you express clearly, deal with emergency efficiently. 6 different sound, meet your different needs, you can choose what you want by the controller. Easy to install with necessary hardware, simple operation. Fits for most DC 12V vehicles, such as car, motorcycle, boat, truck, tractor, van, SUV, etc. Specification: Voltage: DC 12V Power: 30W Material: Plastic & Metal Color: Black Package Size: 11.6 * 11.6 * 11.2cm / 4.57 * 4.57 * 4.41in Package Weight: 440g / 15.51oz Package List: 1 * Speaker 1 * Controller 1 * Set of Hardware Package List 1 * Speaker 1 * Controller 1 * Set of Hardware