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 (not included). Specifications include 16W wattage, effective range up to 800 feet, powerful solid state megaphone design, durable weatherproof construction, pistol grip and press-to-talk operation. Dimensions and weights: 9.62 x 9.62 x 15.25 inches (Item), 9.1" bell diameter x 14.25" long (manufacturer notes), item weight approx. 4.4 pounds (without batteries), package dimensions approx. 15.4 x 9.5 x 9.5 inches, package weight approx. 5.5 pounds. Additional details: Auto Signaling: No; Hailer Wattage: 16w; Intercom Capability: No; Listen-Back: No; Color: Red/Grey. Great Product.