Feature:1. Made of 100% nonmagnetic stainless steel material with a bright polished surface effect that will not rust.2. Superloud 125dB sound, which is marine grade, specially designed for exterior use.3. It is a good choice for marine applications in a salt water environment but can also be used on other 12V vehicles.4. With simple installation, only need four wires, and does not require an on-board air system.5. Own the advantages of durable, sturdy, reliable and corrosion resisitant and rustproof.Specification:Condition: Brand NewItem Type: Dual TrumpetColor: SilverMaterial: Stainless SteelLarge Trumpet Length: Approx. 460mm/18.1inSmall Trumpet Length: Approx. 395mm/15.6inDiameter: Approx. 105mm/4.1inVolt: DC 12VCurrent: 10.0ASound Level: 125dbFrequency: 380HzClass: Marine classTrumpet Type: Electric Trumpet (Work directly when connected to electricity).Package List:1 x Dual Trumpet2 x Black Rubber Pad1 x Accessory Bag