Condition: Single Trumpet Material: Chrome plated ZINC trumpets(Non-Rusting) Overall Dimensions: 17.7"L x 3.9"W x 3.9"H Trumpet Lengths: 16.9" Trumpets Bell Width: 3.9" DB output: 150.2 db Voltage: 12V Frequency HZ of horn: 680HZ Fitment: Suitable for car trucks boats, all types autombiles Included: 1 x Truck Air Horn 1 x Compressor