LCD display: shows the probable type of metal with an arrow, the depth of the target, DISC/NOTCH range, the level of SENS, and battery condition. It also has numeric display for DISC and TARGET Three tone a-udio discrimination: sounds three distinctive tones (high, medium and low) for different types of metal Notch: ignores junk metal and finds valuable items by setting the disc and notch range DISC: discriminates the target selected 240mm waterproof search coil lets you detector even if you must put it under water