: 1. This product has ultra-high stability and high-sensitivity design, and the detection is 360 all-round detection. 2. LCD display, object detection distance, sound, vibration, alarm. 3. It is easier to detect contraband, the product design is user-friendly, and it is equipped with special hanging accessories. 4. The instrument does not require adjustment, is simple to operate, and is equipped with a low voltage indication function. Product parameters: The sensitivity distance for detecting one-yuan coins is 3-5cm, and it has an under-voltage indication function. Detection : vibration, sound, display. Power supply: 9V 6F22 battery, Without battery Working environment: temperature -20-60 Material: plastic colour: Black Package Contents: 1 x Metal Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.