Car Tweeter Speaker, Alarm speaker, warning speaker. Horn speaker, Amplifier Speaker Used for police car, cop car, fire fighting, ambulance EMS, wrecker, Project car, sprinkler, patrol car, emergency vehicle, car alarm ect. CE approved Model: SP100E Description: 1. Rated Power: 100W 2. Voltage: 12V 3. Impedance: 8ohm 4. Frequency Range: 200-5000HZ 5. Sound Pressure: ≥ 118 dB 6. Sound Distortion Factor: <5% 7. Ambient temperature: -20° C~+55° C 8. Humidity: >95%(+40° C) 9. Barometric pressure: 86-106Kpa