Deluxe Megaphone with Siren - Red/Grey - 16W. Our 16 watt deluxe megaphone features a built-in switch selectable electronic alarm siren, pistol grip, press to talk switch, volume control, and shoulder strap. It is weatherproof. It uses eight C-batteries, which are not included.. Specifications. Wattage 16W Max.. Effective 800 feet. Powerful solid state megaphone. Built-in switch selectable electronic alarm siren. Pistol grip. Press-to-talk switch. Volume control. Shoulder strap. Durable weatherproof construction. Operates on 8 "C" cells (not supplied). 9.1" Bell Diameter x 14.25" Long. 3lbs, 4oz w/o batteries