Teknetics Gamma Metal Detector: * Two-digit numerical target ID system * Tone discrimination * Four tones * 79 levels of adjustable discrimination * Multiple notches selectable by categories * Fully static push-button pinpoint * Adjustable sensitivity * Battery condition indicator * Intuitive menu system * Numerical depth readout * Running depth indicator * Audio pitch proportional to signal strength * Rubber button control interface * Discrimination search mode * All metals search mode * Overload alarm system * Ground grab * Manual ground balance * Ground mineralization readout * 8" concentric open-face coil system * Requires one 9V battery (not included)