... easy to operate , stable property, reliable quality , suitable for all kinds of cars ,Popular ones .2. Install the ... artistic.3. Widely applies in all the cars for the army, the public security, the fire prevention ... places on vehicles and station, square, ships, wharf for warning. It is the most advanced, most fashionable ... :2kg size: 35cm*23.5cm*5.5cm 12V Car warning alarm siren horn with 150W speaker