Features 1. Object detection distance, easy detection, data may have some errors due to different measurement methods and tools. Equipped with a built-in copper wire induction coil, it can quickly detect and sense, and is easy to operate. If a metal substance is detected within the detection range, the built-in induction coil will immediately sound an alarm. 2. Wide application scenarios: The foldable rotating probe can rotate 180 , suitable for various scenarios, and is widely used in government agencies, airports/stations/examination venues and other security inspection places. 3. Handheld high sensitivity metal detector, high sensitivity metal scanning detector with red light and sound alarm - high-precision gold detector for gold, silver, and jewelry 4. Easy to operate, with a switch on the side that can be easily pushed during use. When metal is detected, the flashing red light is in alarm mode. 5. 9V battery installation, long-lasting endurance, low energy consumption, using 6F22 9V battery for endurance. If the buzzer or indicator light continuously lights up, it indicates that the battery should be replaced. (Equipped with batteries) Specification Current consumption: less than 3mA Working temperature: -10 ~+50 Search head diameter: 139 mm Detection mode: Beep alarm/LED indicator light flashing Measurement distance:Pin: 20-40mm, Diameter iron nail: 20-80 mm, Paper clip: 30-80 mm, Recording pen: 80-140 mm, Mobile phone: 100-210 mm, Pistol: 110~220 mm Material: ABS Color: Grey Size: 26.8 x 14.7 x 5 cm Weight: 268 g Package Include: 1x Handheld Metal Detector