1. Microelectronic Processor: This metal detector utilizes a microelectronic processor to control the chip unit calibration and instrument self testing system, which allows for easy and fast scanning and testing, improving the efficiency of the mental detector and reducing the labor strength of testing. 2. High Sensitivity: This metal detector has high sensitivity and stability to recognize different types of metals and can easily find metal objects that are useful to you. 3. Multiple Frequency Technology: This metal detector now operates on a number of different frequencies in order to pick up more from gold objects of different sizes! 4. Wide Application: In addition to military applications, this metal detector is also widely used for security inspections, archaeological treasure hunting, prospecting. It detects gold, silver, copper, conventional precious metals (, ), (, emeralds, , etc.). 5. Excellent ABS Material: The shell of this metal detector is made of excellent ABS material, which is very sturdy and wear resistant, not easy to be damaged and has a long service life. Spec: Item Type: Ultra Long Range Metal Detector Material: ABS Battery: Detector: Built In Rechargeable Battery (Nichrome) 2000mAh ( With Built In Battery), Receiver: Build In Rechargeable Battery (Nichrome) 2000mAh ( With Built In Battery) Use: It is not only used in military applications, but also widely used in security checks, archaeological treasure hunting, prospecting. Detecting Object: Gold, Silver, Copper, Conventional Precious Metals (, ), (, Emeralds, , etc.) Basic Parameters: Search Range: Approx. Maximum 1500m/4921.3ft Detection Depth: Approx. Maximum 30m/98.4ft Frequency: 5.6-6KHz Frequency: 433MHz Operating Instructions: 1. Hold the instrument, and scan very slowly in an arc, together with the rotation of your own. At this time, the ‘s elbow should always be