This car siren offers 7 great sounds; a hooter, a ringing fire alarm, a wailing , a blaring police siren, the distinct traffic sound, etc. It has a pre-wired microphone with push to talk button and an Weather Proof Speaker.Loud and clear - This car siren is loud and clear for size. You have to be and solid when on the PA speaker for volume. The tones can be heard clearly even a mile . - This car siren is constructed from materials to maximum strength and durability for long lasting usage. The kit includes solid state PA microphone assembly for clear voice commands and a siren system that can be heard loud and clear.Versatility - This car siren is not vehicles, also anywhere for appropriate usage. The car siren is also perfect for Security Vehicle-Emergency Response Vehicles (ERV).Easy to install - This car siren is easy to install just connect the RED wire to a 12v source (inline fuse included). Run the BLACK wire to a ground (or negative battery post). With very vehicles, the installer may need to purchase additional wiring to elongate the wires. Typical install time is less than a 1 hour. Check your local laws; it may be illegal for this siren to be installed in unauthorized vehicles. It installs anywhere with 12V DC power.Type: Air HornPower: 20w,120 decibelsVoltage: 12VFitment: Fit for most of motorcycles, mopeds, off roads,cars, trucksColour:blackMaterial:plasticPackage Contents:1 x Horn1 x Microphone1 x Mounting BracketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.