... 12V, 20W, 110DB 4.133mm Technical parameters 3 tones 20W Power horn speaker Housing: Plastic, MetalElectronic siren With Remote control and MicrophoneRated ... Voltage: 12V DCSoundS: 3 Tones20W110DB133mmIncluding: Horn, Siren, Police, Fire Alarm, Ambulance, Clear The Way, Traffic, ... !ServiceBest service!Extra service!OEM service! 3 tones 20W Power horn speaker