... Details: Place of OriginShenyang, China (Mainland) Brand NameGTModel NumberMS150UsageAuto L,W,H(mm)171,75,171 net weight2.65KG rated power100W ... frequency: 200 - 5000HZOver 5 years' experience exporting USA & AustraliaFeatures (siren speaker)Light weight, Small size, Compact structure, Water proof, Aquosity proof ... IN ONE PACKAGE6 setSOUND PRESSURE LEVEL ≥128dB 100W Car Siren Speaker