25m Deep Metal Detector with Display Screen 1200m Search Range Gold Finder Metal Scanner Device 100‑240V US Plug White Item Type: Metal Detector Search System: Microcomputer CPU Control and Reflective Conductivity Material: ABS Color: White Product Size: Approx. 28x13cm / 11.0x5.1in Gross Weight: 1278g/2.8lb Search Range: 1200m Detection Depth: 25m Signal Frequency: 400‑470mhz Detector Battery (Shipped with Built in Battery): 1000MAH AAA NiMH Rechargeable Battery Detection Type: Copper, Gold, Silver, Gemstones Working Status: 1. When the main detector is fully charged, turn on the detector, extend the antennae, and turn on the sensor switch. Press the corresponding button on the sensor to detect the desired object. Adjust the main detector for depth and range search. 2. In a stable handheld condition without other interference, when the specified detection object is detected, it will swing from left to right. The swing amplitude will increase when larger objects are detected. Startup Test: Turn on the main detector and search switch. The working indicator on the search instrument will flash. When the gold gear is selected on the main detector, the corresponding gold indicator on the search instrument will lightup. When other gears such as silver is selected on the main detector, the corresponding indicator lights on the search instrument will also light up. If the gear is selected on the main detector and the corresponding indicator on the search instrument does not light up, it may be that the main detector and search instrument are low on power and need to be charged. If the above situation is normal, it means that the instrument is in good condition and can be used with confidence.