Handheld Metal Detectors (Model No. : 1165190), provided by us, has an audible or vibrating alarm that makes it easy to know that it can detected the required material. Handheld Metal Detectors that we offer can detect ferrous, non-ferrous, contraband, stainless steel weapons, or metallic objects on a quick and accurate basis. Handheld Metal Detectors that we provide do not need any adjustments. Besides, no tools are further required to change 9V battery in our Handheld Metal Detectors. Features