This metal detector is specially designed to find the smallest gold nugget in the most mineralized soil. Unlike other professional gold detectors, this metal detector is also a multi-functional multi-purpose detector, very suitable for Coin and treasure hunt.Specificationtype of packagingColor boxBatterySingle 9 volt rectangular alkalinePrinciple of OperationVery low frequency induction balanceOperating frequency19khz, crystal controlBattery LifeHigh-quality alkali for more than 15 hoursOperating temperature14 to 122 degrees Fahrenheit (-10 to 50°C)Working humidity range0-90% non-condensingIdentifyLCD digital recognitionSearch coilDD waterproof search coilusageGold metal detection; archaeology, mining sector and archaeological researchfeatureLarge, easy-to-read LCD displayStylish and lightweightEasy to install operation manual without toolsA 9V battery as power sourceWaterproof probeLarger LCD display, clear readingSuitable for testing in a variety of environments