Labtron Handheld Metal Detector detects concealed metal objects with a large detection zone and adjustable sensitivity. It detects a pistol at 90 mm and a 6-inch knife at 60 mm. Audible, visual, and vibration alarms indicate detection while the ergonomic handle supports handheld operation. Manufactured for security screening at airports, customs, factories, and examination centers, this hand held metal detector supports concealed metal object detection.