7 siren sounds: Car siren speaker can make 7 alarm loud and clear sounds.PA system: Car siren speaker are built in public-address system. You can talk to other people with this mic in your car. You can also have a joke with your friends, they will not know who is talking.Universal: Suitable for Any 12V Vehicle: car siren speaker can be installed in any vehicle with 12V DC Power. You can install it in Car, Truck, RV, Boat, etc.Item Type: Multi-tone and HornsThe sound is pure, super loud.With mounting bracket, the installation is simple.7 different kinds of siren sounds, with microphone functions.Notes:The supply voltage should meet the operating voltage, or can not work properly.The wiring should be correct, otherwise it does not work.The speaker wire should be avoided a short circuit.Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance.Shouting machine Version: A-blue light versionMaterial: plasticcolour: BlackPackage Contents:1 x Horn1 x Shouting machineOnly 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.