"HIGH ACCURACY & WATERPROOF SEARCH COIL: 10-inch metal detector with IP68 waterproof search coil, it has a high sensitivity, it detecting depth of up to 8 inches deep for small coins and metal objects, larger objects up to 3 feet. Waterproof search coil enables you to use detecting to underwater, Perfect for outdoor, like beach, stream, and yard. (Note: the control box is not waterproof.) 3 STRONG MODES OF OPERATIONS: OMMO metal detector kit has three distinct modes that make you can optimize from in detecting metals. All Metal Mode - the metal detector notifies you whenever it sees any metal. Disc Mode - you can utilize this gold metal detector to discriminate against other types of metal for a specific one. Pinpoint – According to your environment to choose the different positioning strength, aids in the detection of metals by beeping. LARGE BACK-LIT LCD DISPLAY: Usually is used beach metal detectors for adults and kids, which equipped with a large back-lit LCD screen to display different detecting depth, discrimination, operating mode, overload warning, sensitivity level, and battery level you can get information intuitively from the screen, which let you detecting more efficient and time-saving. HUMANITY DESIGN & ADJUSTABLE: Don't worry about the length of the stem, the metal detector from 30 inches to 41-inch adjustable stem, suitable for different height adults, or kids. And the armrest design will help you to save more effort, makes you more comfortable and less stressed. Let's start your treasure hunt with the lovely OMMO metal detector. KINDLY KNOW THAT:There are some factors are likely to interfere with the correct signal from the metal detector. 1) Not put the device on the floor, cause most of the building floor has much metal embed. 2) Not suggested to use it indoors, large appliances can also interfere with metal detectors. 3) If you use it outdoors, avoid highly mineralized soil, places with metal waste. If you carry a digging tool, please also place it a little further away from the metal detector when detecting"--Amazon.com.