Golden Mask Thracian Metal Detector (wireless Headphones) 12” SEF Coil. Condition is used. I bought this direct from Thrace detectors in Bulgaria. High quality SEF coil, carbon telescopic lower stem and really good GM wireless headphones. A deep machine with lightening fast recovery speed. Basically like a GM1+UK with adjustable ground balance or turn the knob all the the way to the left and it’s in automatic. A great starter machine that shouldn’t be underestimated.