This is an economic and durable type of high-performance handheld metal detectors, sweep area is larger, more sensitive response quickly, solid body, fine workmanship and detection precision, indicating the position of the metal, by way of light and sound or vibration can help security personnel accurate detection and quickly find metal and other contraband, can meet the needs of the various security situation and factory inspection requirements. It can also be used in important examinations to prevent examinees from carrying prohibited items.