Doph Single-tube Trumpet Electric Horn Chrome Air Horn Loudspeaker Kit 150dB 12V/24V Universal for Train Truck Lorry Features: Suitable for most cars and trucks. Easy installation,convenient to use. Durable zinc alloy trumpets,12V/24V heavy duty compressor. Excellent sound quality and extremely stable frequency, free from vibration, low temperature, high temperature and voltage changes. Made of quality material, firm and durable, not easy to damage. The plug is in good contact, not easy to appear hoarse, provides clear and lound sound. 150dB lound sound, can attract more attention, avoid accidents on the road. Universal for 12V trucks, which is a practical accessory Specificaitons: Condition: 100% Brand New DB: 1000dB Voltage: 12V/24V Current: 5A Material: zinc alloy Package Weight: 750g/26.5oz Item Length: 45cm Item Width: 41cm Output: 125DB