Audible indication: The metal wood detector has a loud sound prompt to remind you of the specific location detected Suitable for: Wall scanner is very suitable, whether you are a professional, a homeowner, or a metal detection enthusiast Easy to use: The voltage density detection device is small and portable, can be held in your hand for testing, very convenient. LCD: The multifunctional handheld metal detector has a large LCD screen for easy viewing during testing Function: Can test metal, wood, and charged circuits separately, and the maximum detection depth is less than the surface of a uniform object