The Megapower 25M MP3 by Power Acoustics is a 25W megaphone designed for high-range voice projection and multimedia playback. It features an integrated MP3 player with USB and SD card support, a wired handheld microphone, and a 3.5 mm AUX input. Powered by eight D-size batteries, it offers over 5 hours of continuous use and reaches up to 1500 meters. Built from ABS in blue and grey, it includes siren and voice modes, and weighs 1.65 kg without batteries.