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 800 feet away with this super-powerful, 30 watt megaphone with voice recorder. This megaphone includes a 10 second integrated audio memory for voice playback. Amplify your voice cord-free and with clarity with this lightweight device. Unit includes adjustable volume control, built-in siren, and wrist strap for added safety. Requires 4 D batteries (not included).* Voice Recording Capabilities* 10 Second Integrated Audio Memory* Repeat Recorded Audio With Ease* Power: 30 Watts* 800 Yard Range* Used By U.S. Army, Navy, Air Force And Marines* For Indoor/Outdoor Use* Variable Volume Control* Tough ABS Housing* Built-In Siren* Uses 4 X D Batteries (Not Included)* Dimensions: 6.25"H x 6.25"W x 10"L* Weight: 1.15 Lbs