Our 20 watt marine deluxe megaphone is weatherproof and has a siren and fog horn. It features a pistol grip, push to talk switch and shoulder strap. It uses eight C-batteries, which are not included. Technical Specifications Bell Diameter 9-1/4" Effective Range 1200 feet Length 14-1/4" Wattage 20 Watts maximum Weight 3-1/4 lbs. without batteries