SMART SENSOR 100-240V High Sensitivity Professional Underground Metal Detector Gold Digger Treasure Hunter Scanner Scanning Tool with Earphone Buzzer This professional metal underground detector is a useful tool to find gold & silver jewelry, coins and other metal in the ground. It is widely used in detecting gold, silver, aluminum, copper, iron, and rare metals, ground minerals body search for offensive weapons in crowd control, airport and border security, checking parcels for metal objects and anywhere that hidden metal needs to be detected.  Features: Apply an electromagnetic field to detect the presence of a concealed metal object. Designed to find gold & silver jewelry, coins and other metal in the ground, and can also find land mines. Adjustable height of metal detector, with ground balance & recognition of explore modes. LCD analogue display and audio indicate the detection of metal. Powered by a rechargeable 7.4V lithium battery - eco-friendly. Adjustable sensitivity for both large and small detection scope.  Earphone sound mode for using in noisy environment or private search in crowded places. Low battery indication, lighting lamp and large LCD display with backlight. Specifications: Brand Name: SMART SENSOR  Color: Black Material: ABS Plastic + Iron Max. Detection Depth: 1.5M / 4.9ft Min Detection Diameter: 3.5cm / 1.38" Detect Objects: Metal Detection Mode: Ground Balance/ Recognition  Operating Frequency: 7.2 KHz Power Supply: 7.4V 1200mAh (Lithium Battery) Charge Voltage: DC 100-240V Power Rating: 0.5W Tuning: Automatic  Detection Indication: LCD Analogue Display Mode / Audio Mode Control: Power Switch Sensitivity: Applicable for detecting gold, silver, aluminum, copper, iron, and rare metals. Application: Testing metal foreign body of raw materials, fuel and food, Detection of underground pipeline & line, Archaeology, Exploration, Found buried treasures of gold, silver and metal artifacts, The acquisition of scrap metal industry, Customs and safety inspection, Police department detective search, Detection of interpol search, Checking metal foreign bodies in express delivery and luggage.  Operating Temperature: 0～50℃ / 32～122℉  Storage Temperature: -20～60℃ / -4～140℉  Item Size: 30 * 30 * 113.5cm / 11.81 * 11.81 * 44.68in Item Weight: 1.78kg / 3.92 lb Package List: 1 * Metal Detector Main Unit 1 * Upper Stem 1 * Extension Aluminum Tube 3 * Clip 1 * Plastic Wrench 1 * Plastic Nut 2 * Plastic Screw 1 * Nylon Screw 1 * Nylon Bolt 1 * Connecting Rod 1 * Installation Tool  1 * Earphone 1 * User Manual