Feature●Perfect size: 30W power consumption, not too loud and not too small, this car horn is perfect for public relations●Just attach it to your vehicle: You can easily install it in your car, corporate car, promotional car, or store stand, etc●Highly Versatile: Can be used with any 12-24V car regardless of the manufacturer or model. The frequency response range is 100 (Hz) and is easy to use●Waterproof: The speaker itself is waterproof, so you can use it safely on rainy days. In case of heavy rain, please waterproof it separately●[Features] 30W DC 12-24V / Waterproof / Distortion Ratio: 1% / Diameter 5.3 inches (13.3 cm), Back Side 3.0 inches (7.5 cm), Length 5.3 inches (13.5 cm), Height 4.3 inches (11 cm), Base 2.6 inches (6.5 cm)Description