3D Ground Navigator 3D Ground Scanner by OKM Metal Detectors 3D Ground Navigator operate in 3 operating modes as follow : Magnetometer : this mode is used to perform quick scan forground to eliminate trash like iron objects before conducting of the real scan with other modes, it is best suitable for finding any kind of ferromagnetic objects.. 3D Ground Scan : by using this mode the device perform real 3d scan for underground treasures and the scanning data will be rendered in Visualizer 3D software to get detailed info including size, depth and position of the detected objects Discrimination : used to determine the type of object whether is magnetic metal or precious metals like gold or silver or voids like tunnels and caves.. Telescopic Super Sensor with latest technology and extendable length upon needs,with it the device can detect smallest metallic targets easily The sensor has mountable handle to ease the carrying of the device . The device is operated by an internal battery for 24 hours of use and the user can use external Power Pack to extend the operating time to 48 hour.