Toa ER-510s megaphone is very small and lightweight, easily carried by a single hand, a developed polyimide diaphragm is employed to ensure high-quality sound, hand grip type loudspeaker, polyimide diaphragm for high-quality sound, 6W rated output and maximum 10W, runs on R6P AA x 8 with 10 hours battery life, weight 650g without battery.