Features:

Super Loud 150DB Trumpet Air Horn
Easy to install.
No Air System Needed.
Glistening chrome finishing and tuned train horn sound.
Suitable for Car Trucks Boats All Types Automobiles.
Air compressor and Air Hose-Pipe included.

Specifications:

Material: Chrome
Horn Size: 450 * 100mm (L x H)
Trumpet Height: 90mm 
Air Compressor Height: 48mm x 112mm (L x H)
Input voltage: DC12V
Rated current: 23 amp
Volume: 150dB

Package Contents: 

Single Trumpet Air Horn with Pipe & Compressor
Includes Adapter, Screws, Washers