Take your message on the road with the sound cruiser car PA system, the best in battery powered car audio PA systems. This horn PA system mounts easily to the roof of your car, truck or any vehicle with straps and suction cups. A DC power adapter plugs into car cigarette lighter or attaches to any battery source. Great for Parades, Fire and Rescue, EMS, & Police. Installs on cars, trucks, construction equipment, firing ranges, golf carts, camp buildings, boats and more.