30 WATT BULLHORNS SIREN & SPEAKER MEGAPHONE. This megaphone phone is perfect for every events, such as crowd control, religious events, rescue activities, sports, construction site. Along with a plug-in hand held microphone and volume control which makes this megaphone more suitable to it needs or purpose30 WATT BULLHORNS SIREN & SPEAKER MEGAPHONE. This megaphone phone is perfect for every events, such as crowd control, religious events, rescue activities, sports, construction site. Along with a plug-in hand held microphone and volume control which makes this megaphone more suitable to it needs or purpose30 WATT BULLHORNS SIREN & SPEAKER MEGAPHONE. This megaphone phone is perfect for every events, such as crowd control, religious events, rescue activities, sports, construction site. Along with a plug-in hand held microphone and volume control which makes this megaphone more suitable to it needs or purpose30 WATT BULLHORNS SIREN & SPEAKER MEGAPHONE. This megaphone phone is perfect for every events, such as crowd control, religious events, rescue activities, sports, construction site. Along with a plug-in hand held microphone and volume control which makes this megaphone more suitable to it needs or purpose