Core Features and Benefits High sensitivity detection Adopting advanced electromagnetic induction technology, it can detect tiny metal objects (such as the detection distance of a dollar coin 9CM, the detection distance of a six-inch dagger reaches 160-180mm), and the sensitivity can be adjusted to adapt to the needs of different scenarios. Sound and light dual alarm mode (some models support vibration alarm), alarm volume automatically adjusted with the size of the target object to ensure that no missing. Strong anti-interference and stability Digital circuit design, effective shielding of environmental interference (such as electromagnetic radiation in airports, signal interference in crowded areas), to ensure the accuracy of detection. Ergonomic operation design Ergonomic integrated handle, light weight (e.g. 352g-390g), not easy to fatigue for a long time. One-key reset function, quickly eliminate false alarms, improve the efficiency of security check. Low battery indicator, support 9V battery or rechargeable battery (optional), long life. Durability and Portability ABS engineering plastic shell, strong impact resistance, 1 metre height free fall without damage. Compact size (e.g. 41.594.5cm), easy to carry and store. Applicable scenes Transportation hubs: passenger security checks at airports, railway stations, underground stations, rapid screening of contraband. Public places: sports stadiums, convention and exhibition centres, entrance security checks of government agencies. Special industries: Precious metal processing plants, electronic factories, anti-theft inspection in prisons. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store