Califone Pa-15 15 Watt Megaphone - Whether on the athletic field, for tour groups and in emergency response situations, the importance of a clearly heard message can be critical! The PA-15 megaphone uses the latest communication technologies that allow the entire crowd / field to listen to your information. Califone Pa-15 15 Watt Megaphone with effective range of up to 1,000 feet, ABS plastic construction for all weather use and durabilit, Built-in electret microphone, Choice of voice / siren operation, Volume control, Accessible on/off switch, Operates on 6 "D" cell batteries (included), Power: 15 Watts RMS, 20 Watts maximum, Microphone: Electret, Volume Control: For voice and siren modes, Effective Distance: 1,000 feet, Power Source: "D" cell batteries (6), Normal use: 6 hours, Continuous use: 3 hours, Dimensions: Length 13", Horn diameter 7.5", Weight: 4.4 lbs with batteries, shipping weight 7 lbs