Underground Metal Detector 15m Depth 1000m Range Remote Searching High Precise Gold Silver Copper Finder Item Type: Underground Metal Detector Material: Aluminum Alloy Maximum Detection Depth: Approx. 15m / 49.2ft (This instrument can detect at least 6m for a 5x5cm object. For a 30x30cm object, it can detect 5 to 8m, and if an object of this size is buried for a long time, it can achieve 15m. If the area of the object is larger, its detection depth will be deepened.) Specific Functions: 1. Metal detector can accurately determine the buried location of the object and can be located. 2. Metal detector can also rely on frequency regulators to identify specific types of metals. Search System: Microcomputer processor control and reflection conductivity Search Range: Approx. 1000m / 3280.8ft Detection Depth: Approx. 15m / 49.2ft Battery: 1 x 12V 1000mAh rechargeable battery (built in) Signal Frequency: 400 to 470MHz Detection Type: Gold, silver, copper, stone, etc.