Torfino MetalTec Silent Vibrating Hand Held Metal Weapon Detector Water Resistant Housing Made of High Impact ABS Plastic, withstands 6,800 Pounds per Square Inch Detects All Metal in a 360 degree radius. Law Enforcement Model Simple Operation, No Adjustment Needed, Push On and Off Button Concealed in the Grip Approximately 2,000 searches with one 9 Volt Battery, included. Alerts the officer to weapons, razor blades, handcuff keys, and even small pieces of metal foil (which may contain drugs) inches away Includes Heavy Duty Black Nylon Belt Holster and Vehicle Mounting Kit. Low battery indicator; unit will vibrate constantly to indicate battery is low