The Pyle Pro PMP39VC is a lightweight handheld megaphone designed to offer siren and voice amplification for indoor and outdoor public address scenarios. 30W of output power provide a maximum range of over 800 yards. It features a built-in microphone, siren mode, and adjustable volume. Selectable voice-changer modes include Baby, Old, and Bot. The pistol grip folds for compact storage and the attached carrying strap enables easy transport. The PMP39VC can be powered by four D batteries (available separately) and has a power switch to prolong battery life during periods of inactivity.