12V 600DB Dual Trumpets Super Loud Electric Horn Car Truck Boat Train Amazon.com: Super Loud Car Electric Horn 600DB 12V Dual Trumpets Truck 600DB Super Loud Air Electric Horn Dual Trumpet 12V For Car Trucks 2x Super Loud Train Electric Air Horn 600DB Dual Trumpets Car Truck. 600DB 12V Dual Trumpets Super Loud Car Electric Horn Truck Boat Train Speaker Item Description Features: 1. Stronger air pressure can be made of upgraded air compressor and larger coil, which can prompt the horn emit a louder and clearer sound. 2. Compatible with 12V system, can be used for SUV, motorcycle, yacht, boat, offroad vehicle, bus, train, etc. 3. High quality chrome plated zinc and aluminum alloy materials, hard, durable, wearresistant and corrosionresistant, and also has long service life. 4. 600dB sound level, has stable performance, and higher work efficiency. 5. Easy to install: can bring you more convenience. It also comes with a universal mount to make installation easier. Specifications: Material: Chrome plated zinc Color: Silver DB Output: 600DB Voltage: 12V Fitment: Suitable for car, boat, truck, lorry etc. Package Included: 1 x Dual Trumpet Electric Horn