The Golden Mask 3 metal detector is a typical relic and coin hunter, running at 8kHz for deep ground scanning. The detector can reach great depths, separating securely good tagrets from trash in all types of soils. GM3 has switcheable manual and auto ground balance modes. In auto mode the machine runs with speed priority while in manual ground balance mode it reaches maximum depths, even in very tough soils. GM3 has a V.C.O audio mode for easy identifying the type of the target with sound modulation.