Pyle 40W Mini Megaphone with Siren White/Red. S Army Schools And More For Indoor/Outdoor Use Variable Volume Control Tough Housing Built-In Siren Uses 6 X D Batteries Not Included Dimensions: Diameter 8'' X Length 13 1/8'' Features of Pyle 40W Mini Megaphone w/ Siren: Powers Up to 40 Watts 1000 Yard Range Used By U.S Army Schools And More For Indoor/Outdoor Use Variable Volume Control Tough Housing Built-In Siren Uses 6 X D Batteries Not Included Dimensions: Diameter 8'' X Length 13 1/8'' Package Contents: Pyle 40W Mini Megaphone w/ Siren Pyle PMP40: 40W Mini Megaphone with Siren White/Red