Features: o Clarity and bility: Voltage: 12V; Power: 20W; Sound Level: 120dB. The public address system for cars is equipped with a powerful host and speaker, allowing sound to be heard from a distance. The alarm system includes 5 or 7 siren types, such as ambulance, police, and fire truck sounds, suitable for various situations. The siren speaker is easy to install on your vehicle by following the included instructions. Wire connection takes only minutes. The PA speaker is compatible with a wide range of vehicles including police cars, fire trucks, ambulances, and private vehicles. Powered by 12V DC or car battery. Specifications: Material: ABS Type: 5 Sound, 7 Sound, Wood Color, Black Color, Record Horn Size: Approx. 15.9 x 17.1 x 9.4 cm / 6.26 x 6.73 x 3.7 in Net Weight: 700g Package Includes: 1 Set Car Warning Alarm Note: Please allow 1 mm error due to manual measurement. Due to differences between monitor displays, the picture may not reflect the actual color of the item.