Features:  Ground Balance & Recognition Mode - You can search nonferrous metal & ferrous metal with detection mode of ground balance & recognition. Great for coins and jewelry detecting, prospecting, shallow water hunting, beach hunting, etc.  Wide Usage - Perfect for looking for metal objects and hidden metal needs to be detected.  Designed to Find Metal - Search gold & silver jewelry, coins and other metals in the ground.  Audible & Visual Alarm with LED Light for Target Indication - You don't have to keep watching on the detector. When an object is being detected, a beep sound will remind you.  Lighting Function - Bright flashlight accesses convenient measurement in the dark.  Adjustable Height of Metal Detector - Easy to adjust the  height of the detector for comfortable use.  Earphone Jack - Provided for headphone connection. Both stereo and mono headphone can be used.    Specifications:  Material: ABS plastic     Max. Detection Depth: 1.8m / 5.9ft  Size of the Metal Can Be Measured: 50*50*1.2cm metal board  Min. Detection Diameter: 3.5cm / 1.38in  Detect Objects: Nonferrous metal and ferrous metal  Detection Mode: Ground balance / recognition  Master Frequency: 3.68MHz  Operating Frequency: 7.2KHz  Charge Voltage: DC5V  Power Dissipation: ≤1W  Tuning: Adjustable  Control: Power switch  Power Supply: 1 * 4.2V 2000mAh lithium-ion rechargeable battery (built-in)  Detection Indication: Audible & visual alarm with LED light  Indicator Light: Power / Low battery indication light  Search Coil Diameter: 300mm / 11.81in  Adjustable Height of Detector: 102-123cm / 40.16-48.43inch  Application: Testing metal foreign body of materials, fuel and food; detection of underground pipeline & line, archaeology, exploration, buried treasures of gold, silver and metal artifacts.  Other Function: Low battery indication, battery status indication, flashlight  Operating Temperature: 0～50℃ / 32～122℉  Storage Temperature: -20～60℃ / -4～140℉  Metal Detector Size: 30 * 30 * 123cm / 11.81 * 11.81 * 48.43in  Metal Detector Weight: 860g / 30.34oz   Package Weight: 1999g / 4.41lb  Package Size: 43 * 35 * 14.5cm / 16.93 * 13.78 * 5.71in    Packing List:  1 * Controller Unit  1 * Search Coil    2 * Connecting Rod  1 * Armrest Rod  1 * Earphone  1 * USB Cable  1 * Bag of Accessory  1 * Manual (English)