VLF means Pretty Minimal Frequency and is the same engineering used in detectors designed for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Allow me to share five main reasons why you could possibly select a VLF in excess https://linuxline.org/blogs/125296/Accuracy-of-Modern-Metal-and-Gold-Detectors