It' s classical, enjoys good reputation among our clients. Handheld Metal Detector (MD-5-II) has obtained the national patent (Patent No: ZL. 01310419.5). It can be used in public security detection of airport, railway station (especially dangerous metal objects), dock, prison, custom and frontier defense, quality detection of medicine, food and other commodities; examination of noble metal and detecting in other important fields, especially suitable for detecting luggage, package, dangerous metals carried by people. CE, RoHS approved. Characteristics: 1. Use and modulate easily; especially adapt to detection of dangerous metal goods, e. g.: knives, dirks, machinery. 2. Pocketable, easy to carry. 3. Low consumption, if 6V battery (9V should be used) is used, detection distance isn' t shortened.