Professional Underground Adjustable Gold Metal Detector. With This Powerful and Versatile Metal Detector, You Can Hunt for Coins, Relics, Jewelry, Gold and Silver Everywhere. It is Also Widely Used in Detecting Aluminum, Copper and Rare Metals and Anywhere That Hidden-metal Needs to Be Detected.FEATURES:Widely Use - Perfect for Finding Metal Objects and Anywhere That Hidden-metal Needs to Be Detected.Designed to Find Metal - Search Gold & Silver Jewelry, Coins and Other Metal in the Ground.Adjustable Height of Metal Detector - Adjust the Detector's Length for Comfortable Use.Detection Indication - Audio Alert and Pointer Indicate the Detection of Metal.Headphone Jack - Provided for Headphone Connection. Both Stereo or Mono Headphone Can Be Used.Volume Control - Adjust the Output Volume of the Loud Speaker or Headphone.Waterproof Search Coil - You Can Use the Metal Detector in the Shallow Water.SPECIFICATIONS:Material: ABS Plastic + AluminumSize: ~107 * 27 * 16.5cm / 42.12 * 10.63 * 6.50inNet Weight: ~862g / 1.90 LbSensitivity: Min. 130mm / 5.12" (Test Coin: US 25)Detect Objects: Metal(Iron Nail, Iron Covering, Aluminum Ring, Small Aluminum Product, Coins, Gold, Bronze, Silver)Detection Mode: All Metal, DiscriminationOperating Frequency: 5KHZPower Supply: 2 X 6F22 9V Batteries (Not Included)Operating Current: Standby 10mA(LCD with Backlit Color 80mA)Max 70mA(LCD with Backlit Color 150mA)Operating Voltage Range: 9VDetection Indication: Mechanical Pointer Mode, Audio ModeControl: Power SwitchSensitivity: AdjustableDetection Depth: 10-30cm / 3.94-11.81inchHight: AdjustableAdjustable Height of Detector: 78-107cm / 30.71-42.12inchOperating Temperature: -15~45 / 5~113Storage Temperature: -20~60 / -4~140Fit: 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,Note: The Search Coil is Waterproof, but the Control Housing is Not Waterproof.INCLUDES:1 X Metal Detector Main Unit1 X Armrest1 X Connecting Rod1 X Search Coil1 X Search Coil Knob1 X User Manual