Specifically for use with MXT, MXT Pro, DFX. Designed for larger metal items, relics, groups of coins, jar hunting, searching sand bars for large nuggets, etc. Three feet plus (depending upon target size and search mode) on larger masses of metal. Suggest 15 kHz "single frequency" when used with DFX. Not tuned for VX3 / V3i. 2.25 lbs. Loop Stabilizer 802-5190-4 recommended (not standard equipment). Search areas where digging is not critical, and a quality "shovel type" digging tool recommended.