Alarm Indication: Audio alert and LED indicator can work together, with headphone output. Alarm volume is dependent upon the size and conductive of the metal object.
Sensitivity: >=9cm (a coin)
Power Supply: 9V fold battery (6F22ND), with low battery indication, rechargeable, (charger is optional)
Quiescent Current: <26mA Operation Current: <120mA, Feature and Application: Originally designed for use at the Olympic Games in 1984, Super Scanner is the most recognized hand-held metal detector in the world.