VLF means Extremely Low Frequency and is the same engineering Utilized in detectors built for cash, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here are 5 explanation why you could possibly select a VLF over a PI Our writers https://www.chinauksorn.com/forum/topic/8787/gold-detector-finds-you-wouldn%E2%80%99t-believe