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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 KhzPower consumption: 0.6 WWeight: 3.2 Kg ground searching metal detector ground searching metal detector