Description Schonstedt GA-72CD has audio tone plus digital LCD display with bar graph and battery indicator, locate iron and steel objects underground, pavement, snow, and shallow water. Includes: plastic carrying case, 5-year warranty Audio Output: Switch at ‘A’ Signal increases or decreases in volume with gradient-field intensity Switch at ‘B’ Signal increases or decreases in frequency with gradient-field intensity Video Output: Digital readout and expanding bar graphs indicate polarity ( or-) and relative strength of the magnetic field Input Power: Supplied by two 9-volt lithium batteries Battery: Life 60 Hours (intermittent usage) Battery Check: 4-segment LCD BATT indicator Output: Approximately 40 Hz audio tone on the speaker Tone frequency increases or decreases with gradient-field intensity. Weight: Approximately 2.5 lb. (1.14 kg) Operating Temp: -13° to 140°F (-25° to 60°C) Overall Length: 34.5 in. (87.6 cm) Nominal Sensor Spacing: 14 in. (35.6 cm) Construction: Rugged, all-solid-state, polycarbonate & ABS casing
