Ultimate sensitivity Self-calibrating Rugged, high-impact ABS case No tools required to change standard 9V battery (included) Sharp audible alarm and bright red LED indicates the detection of metal Momentary push button Three-color LED indication Originally designed for use at the Olympic Games in 1984, Garrett&';s Super Scanner is the most recognized hand-held metal detector in the world.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }