Main functions:*It has ground balance function and can eliminate *"mineralization reaction".*It can differentiate ferrous metal from nonferrous metal.*It has adopted a intelligent operation system. *It has small weight and long work life. *It can identify metal sound through earphone. *It features broad detecting range, accurate positioning, and great distinguishing capacity. Product parameters: Max detecting depth: 1.5---5 meters (Manifold models are optional)Sound frequency: 400 Hz. Working current: 12DCV "AA"(Alkaline) 8X1.5 V Signal frequency: 7 Khz Power consumption: 0.6 W Weight: 3.2 Kg
