GameCraft1000" Megaphone 51W: * 10 watts of power * Activated by trigger control * Microphone built into rear end of the unit * Adjustable volume control * Only weighs 7 lbs. * Siren button * High-impact PVC construction * Loud enough for 3 football fields * Easy to hold, easy to carry and has more than enough range for most school events * Built-in microphone * Operates on 6 C-size batteries – not included