The UZI-MP-204R 15-Watt Megaphone with Siren features adjustable volume and recording/playback. Other features include a built-in microphone, foldable handle, LED light indicator and a wrist strap. This unit uses (4) C 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.