30m Depth Metal Locator 1000m Range Underground Metal Detection Finder with Display for Gold Treasures 100‑240V White US Plug Item Type: A8 Metal Detector with Dispaly Material: ABS Gross Weight: 2186g / 77.1oz Color: White Search System: Microcomputer CPU control and reflection conductivity Search Range: 1000 Meter / 3280.8ft Detection Depth: 30 meters / 98.4ft Host Battery: NiMH rechargeable battery, AAA, 1000MAH (Built in Battery) Transmission Frequency: 5.6-6KHz Signal Frequency: 400-470MHz Detection Type: Gold, silver and treasure stones Product Size: Metal Detector Size: 30x22x9CM / 11.8x8.7x3.5in Display Screen Size: 9.5x5.5CM / 3.7x2.2in Working Status: 1. When fully charged, turn on the host detector, turn on the switch of the sensor, press the button corresponding to the item that the sensor needs to detect, and adjust the host detector to adjust the depth and range search function to detect; 2. In the case of steady hand holding and no other interference, it will sway from side to side when detecting the designated object, and the amplitude of the swing will increase when the detected object is larger. Boot test: 1.Turn on the switch between the host and the searcher, the work indicator on the searcher will flash; 2.when the gold gear is selected on the host, the corresponding gold indicator on the searcher will be on, and when selecting other silver, jewel and treasure stones gears on the host in turn , the corresponding indicator on the searcher will light up. 3.If the gear selection on the host appears, but the corresponding indicator light on the searcher is not on, the power of the host and searcher may be insufficient and need to be charged. 4.If the above conditions are normal, the instrument is normal and can be used with confidence.