... ,siren speaker,Car Horn)Features:1) Waterproof, corrosion-proof 2) Conforms to GB8108-1999 standards3) Made with boron steel: efficient electricity-sound exchange ... ) HA-102: 8 ohm,100W,with Frequency range:400-3500Hz,Sound pressure:110-118db,weight:2.9kg5) HA-152: 8 ohm ... ,150W,with Frequency range:100-4500Hz,Sound pressure:110-122db,weight:3kgPacking: standard export packing