PylePro Model : PMP21BLMini Megaphone SpeakerCompact & Portable Megaphone Speaker with Siren Alarm Mode, Battery OperatedFeatures:Compact Megaphone SpeakerPortable Battery Operated Design(2) Audio Modes: Voice Talking & Siren AlertVoice Mode: Amplifies Your Voice as Spoken into the MicrophoneSiren Alert Mode: Button-Activated Emergency Alarm ToneHigh-Powered PA Sound ProjectionAdjustable Volume ControlConvenient Quick Folding HandleErgonomic Pistol Grip and Mini Light-Weight ChassisTechnical Specs:Power Output: 20 Watt MAXAudio Projection Range: Up to 400+ YardsBattery Operated: Requires (4) x C Batteries, Not IncludedMegaphone Size (Diameter x Length): 5.40 x 8.60 -inches