20W max power output for clear and effective sound projection Five audio modes: Talk, Siren, Music, Whistle, and 60-Second Recording Aux (3.5mm) input for MP3/music playback from external devices Built-in automatic siren function for emergency use Ergonomic pistol grip and lightweight design for comfortable handling Shoulder strap included for easy portability Adjustable volume control for customized sound levels Battery-powered (requires 4 x 'C' batteries, not included) Durable ABS construction for long-lasting use Projection range up to 400 square yards for effective communication