... , completely function , easy to operate , stable property, reliable quality , suitable for all kinds of cars ,Popular ones .2. Install the main ... the cabs artistic.3. Widely applies in all the cars for the army, the public security, the fire prevention, rescues, ... user-friendly in the alarm apparatus.Packing:package weight:2kgsize: 35cm*23.5cm*5.5cm 300-400W Electronic Emergency Vehicle Sirens with ...