Speco ER370 Deluxe Megaphone w/Siren - Red/Grey - 16WDeluxe 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