Small Metal Detector Positioning Rod, 360-degree High Precision Metal Detection, Portable Handheld Metal Detector

no battery (Alkaline batteries cannot be transported by air. Please bring your own batteries) Note: Due to the large power consumption of the detector, alkaline batteries should be used. If the detection also produces abnormal sound in the absence of metal contact, it is usually because of the use of carbon-zinc batteries or alkaline batteries with insufficient power, and it is necessary to replace a fully charged alkaline battery. Detection depth: 4CM The volume of the detected object cannot be smaller than the size of a 1 coin