Metal Detector with Waterproof Search Coil LCD Display High Accuracy Underground Metal Treasure Locator Item Type: Metal Detector Battery: 1 x 9V 6F22 Dry Cell (not included) Search Coil: Waterproof Search Coil Working Principle: VLF induction balance Working Frequency: 19KHZ, crystal control Reactive Overload: 10000 micro-cgs (with standard search coil) Resistance Overload: 1200 micro-cgs (with standard search coil) Ground Balance Range: From sodium iron ore to saline water, including all Ground Recognition Suppression: 2nd and 3rd methods combination Target Recognition Ground Suppression: 3rd Order Endurance: More than 15 hours under the condition of Alkaline battery Operating Temperature Range: 14 to 122℉ (-10 to 50℃) Operating Humidity Range: 0-90% non condensing Unneeded Target Elimination: You can set the detector to not respond to certain objects for gold exploration. Identify metals at night or outdoors in the dark. Accurate positioning is the process of finding the exact location of buried objects. Long buried metals look exactly like the surrounding soil, making it difficult to separate them from the soil. Ground balance is the ability of a detector to ignore or see through naturally occurring minerals on Earth, and only emits sound when metal objects are detected. FS2 combines proprietary circuitry and programming to eliminate erroneous signals from harsh ground conditions.