This handheld metal detector is designed for security and general use. It features a 10" scanning surface and can detect metal objects with audible buzzer or vibration alerts, accompanied by a red LED indicator. The sensitivity is adjustable via a dial, allowing for customization based on the target object's size, shape, and composition. It is powered by a 9V battery (not included) and includes a low battery alert system with both an audible sound and a red LED indicator. The detector operates at a frequency of 25KHz, weighs 400g without the battery, and measures 41cm in length, 8cm in width, and 4.2cm in height. The operating temperature range is -15℃ to +55℃. Additional features may include a belt holder and wrist strap, depending on the specific model. This device is suitable for various environments such as airports, schools, nightclubs, and courtrooms, and can also be used for finding lost metal items or detecting metal within materials like wood or plaster.