Pyle-Pro PMP50 Professional MegaphoneOffers 1200 yards of range, conveying your voice over the field or the meeting room effectively. Ideal for indoor or open air utilize, the PMP50 offers both talk and consideration snatching siren modes with variable volume control so you can modify the sound to fit the space. Intended for string free utilize, the PMP50 keeps running on 8 C batteries (sold independently). Technical Specs:MAX Power Output: 50 Watt Audio Projection Range: Over 1,200+ YardsSound Processor: Dynamic Piezo DriverDimensions: 9.0'' (Diameter) x 13.8'' (Length)Sold as: UnitWeight: 4.36 lbs.