Engineered for super power, the Hamilton MM3L Megaphone with Light can project a voice up to 1/4 mile distance with exceptional clarity. Lightweight, compact and ruggedly built of steel and plastic, it resists impact, all outdoor climactic conditions. The built-in light offers great visibility in poor weather conditions. The MM3L Megaphone (Bullhorn) offers a compelling combination power and exceptional value. One (1) year warranty.