NEW Pyle PMP30 30W Professional Megaphone / Bullhorn Speaker W/ Siren 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, Weight: 1.15 Lbs. This hand-held voice amplification device is the perfect accessory for those looking to get immediate crowd attention or involvement, no matter the application. This compact, yet powerful portable megaphone will provide 30 watts of output power, allowing the operator's voice to be projected a distance of up to 800 yards away. This durable, hand-grip style bullhorn is commonly used by the U.S. Army, Navy, Air Force and Marines due to its versatile size and weight, weighing just more than one pound with a diameter of only 6.25" by 10" in length. It requires four "D" sized batteries (not included) and comes equipped with a built-in siren function. Additional features include volume control, power on/off switch with LED indicator, siren and music control and a convenient carry strap.