carol megaphone with mic and sirenMEGAPHONE 625S WITH MICROPHONE AND SIREN CAROL Megaphone with microphone & siren will ensure clear communication across approx. 550mts. The megaphone will run for approx 6 hours using 8 x C batteries. If you don't require the hand held microphone you can opt for the Carol MEGAPHONE 615. SPECIFICATIONS: Siren, whistle and fog functions Power output: 25W(maximum) Effective distance: 550m (quoted from JIS EIAJ TT 4501A) Power source: 8 x Size C batteries