Feature:1. PORTABLE DESIGN: Hand metal detector kit, which has arm support to help you operate the detector comfortably, efficient and labor saving in operation.2. EASY OPERATION: Supports one click auto tuning, which can search for metal objects as indicated by the perimeter, and can also be used in noisy areas.3. HEADPHONE JACK: This metal finder has headphone jack, you can connect a stereo headphone (not included) and operate easily, with strong practicality.4. OTHER PARTS: The waterproof search coil can be used in shallow water areas, the valve rod allows you to adjust the length of the detector for easy access.5. WIDE APPLICATION: Can detect iron nails, aluminum rings, coins, gold, bronze and silver, widely used in security inspection, archaeology, seabed exploration, etc.Specification:Item Type: Metal DetectorProduct Model: MD940Battery: 2 x 6F22 9V alkaline batteries (batteries not included)Frequency: 6.25KHzSensitivity: Approx. 180mm / 7.1inStretch Length: 15.75-25.6inDetector Diameter: 9.6inColour: BlackDetection Object: Metal (iron nails, iron sheets, aluminum rings, small aluminum products, coins, gold, bronze, silver)Application: Gold detection, desert detection, security inspection, archaeology, treasure detection, beach detection.Package List:1 x Metal Detector Host1 x Grip1 x Armrest1 x Searching Coil1 x Connecting Rod1 x User Manual