Features: equipped with ground balance , eliminate “mineralization reaction”, improved depth of invertigation and Accuracy; Distinction Between ferrous metal and nonferrous metal; Intelligent operation system; Encapsulation with high-strength ABC material,lightinweight,longer life; Distinguish sound of metal.
[specifications] Max depth:small detector:1.5M, big detector:3.5M, signal frequency: 7KHz frequencies of the sounds:400Hz ·working current:12DCV "AA"(basicity) 8X1.5V Power dissipation:0.6W ·weight:3.2Kg