Detech 18" x 15" SEF Butterfly Search Coil for Minelab GPX, GP, SD Series Gold Detectors bone-conduction-compatible so every FMF coil ships

so every FMF coil ships with the full five-year manufacturer warranty

40 kHz single-frequency for small nugget sensitivity

7 V / 5100 mAh internal lithium-ion cell

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Detech 18" x 15" SEF Butterfly Search Coil for Minelab GPX, GP, SD Series Gold Detectors bone-conduction-compatible so every FMF coil shipsDetech 18 x 15 SEF Butterfly Search Coil for Minelab GPX, GP, SD Series Gold Detectors Lightweight open coil. Middle size to allow user to cover more ground in less time resulting in finding more gold. Very similar to the larger 21" x 17" search coil. Will go deeper and give better performance when searching for GOLD. Very stable and very accurate pinpointing to locate even your smaller Gold finds. Field tests show the S. E. F. search coils really