Pyle 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. VOICE MODE: The Pyle megaphone speaker has 2 audio modes. The first one is voice mode wherein the bullhorn amplifies a voice or sound spoken into the microphone. This mode is most commonly used in cheerleading and other school activities. SIREN ALERT MODE: The second mode is siren alter mode. With this mode, the bullhorn can act as a siren and sound an emergency alarm tone with just a push of a button. This mode can be used by the police and anyone else. 20 WATT POWER: The power output of the portable megaphone is 20-watt max. It is battery operated and requires (4) x ‘C’ batteries. It also has a silver ergonomic pistol grip design and mini lightweight chassis. HIGH-POWERED PA SOUND: This bullhorn megaphone has a high-powered PA sound, and the audio projection range is up to 400+ yards. There’s an adjustable volume for noise control during different situations. COMPACT AND PORTABLE: This Pyle megaphone speaker is compact and portable with an exact dimension of 5.40'' x 8.60''. It even has a convenient quick folding or foldable handle that comes in handy when traveling.