XP Deus II 13 x 11 inch FMF Waterproof Search Coil, Lower Rod, and Hardware multi timing 5 pounds: hours of hunting OBWS_10000110 5 pounds: hours of hunting without wrist fatigue Focused Core technology boosts sensitivity on sub gram nuggets: the DD FC construction concentrates the electromagnetic field for stronger response on tiny gold that larger mono coils miss Saltwater beaches present two challenges: wet sand mineralization that destabilizes single frequency detectors Elliptical geometry offers better maneuverability around obstacles and tighter target separation in iron heavy sites compared to round coils of equivalent sweep width