ER-66 is a hand grip megaphone with detachable PTT microphone featuring 25 W power and 700 meters range with excellent intelligibility. 25 W 500 ~ 700 meters range Detachable PPT microphone Siren (S and SD models) Whistle (W model) 8 x C type batteries or 3 x “18650” lithium batteries 12V DC (SD model)
