Pyle 30W Mini Megaphone White/Red. S Army Navy Air Force And Marines For Indoor/Outdoor Use Variable Volume Control Tough Housing Built-In Siren Uses 4 X D Batteries (Not Included) Dimensions: Diameter 6 1/4 X Length 10 Features of Pyle 30W Mini Megaphone: Power: 30 Watts 800 Yard Range Used By U.S Army Navy Air Force And Marines For Indoor/Outdoor Use Variable Volume Control Tough Housing Built-In Siren Uses 4 X D Batteries (Not Included) Dimensions: Diameter 6 1/4 X Length 10 Package Contents: Pyle 30W Mini Megaphone Pyle PMP30: 30W Mini Megaphone White/Red