VLF means Very Very low Frequency and is the same technological innovation Employed in detectors developed for cash, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Listed here are 5 explanations why you may decide on a VLF above a https://www.rueanmaihom.net/forum/topic/68212/metal-detector-batteries:-how-to-keep-going-longer