Compact, exquisite, waterproof -Compact and exquisite design perfectly solves the problem of insufficient installation space of some models , high-quality ABS material + waterproof shell, fixed bracket iron sheet,good waterproof performance.130db bright alarm -The horn loudness 130db, can issue a warning that can not be ignored, attract more attention, avoid more accidents on the road, help to warn other vehicles and pedestrians, ensure your safety.Low power, high performance - The speaker uses 12V DC power supply, low power consumption, through this efficient speaker can improve the vehicles output sound quality, and produce clear and loud sound.General Speaker- Is suitable for DC 12V vehicles such as automobiles and trucks, it is suitable for most motorcycles, all-terrain vehicles, karts, off-road vehicles, pocket bicycles and 12V power cars.*matters needing attention*: One line of our button connects to the blue line (or white line) of our wiring harness, the other line of the button connects to the battery positive line, and the white line(or blue line) in the wiring harness connects to the frame. These are easy to connect wrong, resulting in the relay does not work.Please check it carefully!!