This metal air horn is ideal for drivers who powerful and reliable horn for their vehicle. Whether you're driving a car, truck, or boat, this horn will make you noticed easily. The integrated kit makes installation straightforward, and the metal construction provides long-lasting performance. Features -Voltage: 12 V -Frequency: 500-800 Hz - : 15 A -Working temperature: -40~80 degree centigrade -Working pressure: 0.3~0.9 -Sound level: 600 -Impedance: 8 -Color:Black -Material:Metal -Size:21.50X15.00X7.10cm/8.45X5.89X2.79in -Note: The section of the main power cable of the relay should be greater than or equal to 2.5 MM. The output cable should be not less than 1.5 MM. The operating of the control relay must be greater than 10 A. -Powerful sound: The dual-trumpet design provides a clear and attention-grabbing sound, making your car horn stand out in a crowded situation -Easy to install: The integrated train horn kit features a straightforward installation process that requires no expertise, making it quick to set up -Wide application: Compatible with various vehicle types, including private cars, business vehicles, and pickup trucks, allowing for wide compatibility -Lasting durability: Constructed with sturdy metal materials, this car air horn kit is resistant to impacts and wear, offering long-lasting performance - : With its increased volume and sound quality, this truck horn makes your warnings heard by other drivers clearly to prevent accidents Package list: 1 x set of air horn kit