Metal Detector, Professional, GC1018
Operating frequency: 6KHz ~ 6.8KHz.
Audio frequency: 360Hz ~ 440Hz.
Pinpoint function help to find the accurate place of target.
Ground balance function enables user to find a balance point.
All metal mode: maximum sensitivity >=25cm for an US quarter; viewmeter shows intensity; able to detect ferrous and non-ferrous metal.
Discrimination mode: maximum sensitivity >= 23cm for an US quarter.
Auto ground balance; viewmeter and audio indicate metal type.
Target indications: viewmeter, 2" speaker and 1/4" earphone jack.
Low battery indication.
8 AA batteries required (12V).