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 to the roof of your car, truck or any vehicle with straps and suction cups. DC Adapter Plugs into car cigarette lighter or attaches to any battery. 50 watt amplifier with built-in receiver. 16 Channel UHF wireless receiver from 584MHz - 608MHz. Lapel & Headset mic + transmitter. Equip any car truck bus or boat for voice-casting in minutes. Quad horn speaker assembly easily mounts with suction cups and tie-down straps. Plug into your car's cigarette lighter, direct-wire the unit to your 12-volt car battery or use 10 D-cell alkaline batteries for up to 200 hours. Universal 4 horn speaker module mounts to any vehicle and easily adjusts at 450 increments for front side / rear projection. DC car adapter & cables included. Audience Size: up to 3000 people. Limited Warranty: 6 years electronics.