AmpliVox S602M MityMeg Piezo Dynamic Megaphone w/Detachable Microphone, 25W, 1 Mile Range APLS602M APL S602M, 25W megaphone features Piezo Dynamic Technology that delivers powerful performance while significantly reducing weight and increasing battery life. Full frequency response provides clear, intelligible amplification. Adjustable volume and three modes (talk, siren and whistle) offer enhanced versatility. Battery indicator light vividly shows power status. Weatherproof design stands up to inclement wather. Pistol grip and wrist strap make it comfortable to hold. WIth detachable microphone. Audio Range: 1 mi; Diameter: 9 in; Length: 14 in; Maximum Battery Operation Time: 40 h., UPC 734680060213