Heavy Duty Megaphone Bullhorn for handheld or shoulder-slung use (strap supplied)Detachable anti-howl microphone on coiled lead with on off switch and volume control. Metal and ABS construction.Built in SirenTechnical specificationRange: 0.5-0.7Km depending on operating conditionPower: 8 x C (UM-2) type batteries available in grocery stores (not supplied)Weight: 1.65Kg excluding batteriesSize: 230mm x 340mmFor best results kindly use heavy duty batteries