Features: Compact Megaphone Speaker Portable Battery Operated Design (2) Audio Modes: Voice Talking & Siren Alert Voice Mode: Amplifies Your Voice as Spoken into the Microphone Siren Alert Mode: Button-Activated Emergency Alarm Tone High-Powered PA Sound Projection Adjustable Volume Control Convenient Quick Folding Handle Ergonomic Pistol Grip and Mini Light-Weight Chassis Technical Specs: Power Output: 20 Watt MAX Audio Projection Range: Up to 400+ Yards Battery Operated: Requires (4) x ‘C' Batteries, Not Included Megaphone Size (Diameter x Length): 5.40'' x 8.60'' -inches