They'll hear you at the far ends of the field when you use the 40W thousand-foot megaphone. Easy to hold, easy to carry, it has more than enough range. The microphone is built into the rear end of the unit and is activated by a trigger control. Be heard up to a mile away with this super-powerful megaphone. This megaphone includes a handheld mic and eronomic pistol grip for easy use. Amplify your voice cord-free and with clarity with this durable yet lightweight device. Unit includes adjustable volume control, built-in siren, and wrist strap for added safty. Requires 8 C batteries (not included).