The UZI-HHSC-1 Handheld Metal Detector features one switch operation and is made of high impact ABS plastic with reinforced coil compartment, large scan surface for quick thorough scanning and sharp audible alarm. Other features include an LED light to indicate metal detection and silent vibrate mode. Uses a 9-volt battery. UZI combines advanced technical concepts with innovative designs to produce products used and trusted by the Army, Secret Service and Special Forces.