EQX 15 DOUBLE-D SMART COIL For EQUINOX Series and X-TERRA PRO Detectors.The waterproof 15 x 12-inch elliptical Double-D coil provides maximum depth for specialised treasure hunting. It is also great for wide ground coverage in open spaces. The EQX 15 coil weighs 660g with the included protective skidplate, bringing total weight of the EQUINOX detector to 1.49kg with the EQX 15 attached.