Product information and features: One switch operation—turn it on and begin use Audible or vibrating alarm. Sharp audible alarm and bright red LED indicates the detection of metal. Ultimate sensitivity detector. Used in prisons to detect tiny, hand-crafted weapons. Used in mass transit screening to detect guns, knives, razor blades, box cutters, foilwrapped drugs, and other forbidden items. Detects ferrous, non-ferrous, and stainless steel weapons, contraband, and other metallic objects. New energy efficient design offers extended battery life over previous models. Rugged, high-impact ABS case with reinforced coil compartment. Large 10” scan surface for quick, thorough scanning. Does not require adjustments. No tools required to change 9V battery. Momentary push button temporarily eliminates detection of nearby ambient metal such as rebar, metal walls, etc. Green LED indicates ON; Amber LED indicates low battery; Red LED indicates ALARM. Designed and manufactured in the U.S.A. to Garrett’s quality management system standards.