The UZI-MP-50W 50-Watt Megaphone with Siren features adjustable volume and recording/playback. This model also features a detachable microphone, repeat play back, shoulder strap, siren and LED indicator. The 50-Watt Megaphone offers a range of approx. 600M. This model uses (8) D batteries. UZI combines advanced technical concepts with innovative designs to produce products used and trusted by the Army, Secret Service and Special Forces. Since its launch in the 1950s, UZI has become one of the world’s most famous firearm brands and a 20th century icon.