operation, beautiful design, easy storage, low failure rate, can detect metal objects within 2.5m underground The built-in intelligent induction coil detects metal objects accurately and instantly, and automatically adjusts the detection distance according to various objects Equipped with 2 sirens with red LED indicator light and buzzer alarm, 180 foldable head, flexible use in different occasions to meet different needs Hand-held design, easy to operate, can be used for public security such as airports, railway stations, docks, prisons, customs, etc. Smart power saving technology, can be used for a long time on a single charge, note: the battery is not included in the package. You have to set it up with a 9V battery. Handheld metal detectors can detect ferrous and non-ferrous metals. It can also locate metal objects in camouflaged hiding places, such as people, carry-on luggage, mail and package shipments, walls, paneling, hollow spaces and floors. How to use: 1. Turn on the detector, and a "beep" sound indicates that the detector has started to work. (If the buzzer hissing or light stays on, the battery needs to be replaced). 2. A single "beep" indicates metal during scanning. 3. To detect undergroundobjects, it is recommended that the detector head be to the ground. Delivery Quantity: 1pc Package Contents: Only the above package content, other products are not included. no battery provided Dimensions: as picture shown (Reminder: The size is measured manually, please allow 1-2 cm measurement error) color: gray (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)