The Sun Ray Invader FX-1 Target Probe has been developed to satisfy the pinpointing and retrieval needs of Fisher F-75 & F-70 owners. We have received many requests for an in-line target probe for the F-75. Now F-75 & F-70 owners can enjoy the same benefits our quality Sun Ray in-line probes have offered users of previous Fisher models! Here are some of the features of the FX-1: Key FeaturesFully compatible with the Fisher F-75, F-75 LTD & F-70 models only. The FX-1 is precision built to ensure peak performance. Accurate “bull’s eye” pinpointing on coin size targets up to 3″ + deep depending on settings, operation modes, ground and moisture conditions! The new compact, lightweight, waterproof/submersible 6″ X 1″ diameter probe mounts nicely along arm rest for easy access. FX-1 probe and cable weigh approx. 5 oz. FX-1 switch box, connectors, cable, and two probe clips, etc. weigh approx. 5oz. – approx. 10 oz total! While the FX-1 probe is waterproof the switch box is water-resistant and must not be submersed. Installation requires no tools or modifications to the detector. Switch box and probe clips are attached by removable velcro-lined clips. The FX-1 incorporates all of the same functions as the stock coil including visual and audible target ID along with identical pinpoint functions! High-quality custom-made, durable probe and connector cable used for precision performance. The probe incorporates a 30″ straight cable with strain relief for “tangle-free” operation. Quality high-performance toggle switch used for peak performance! (Minimum 100,000 mechanical life operations described in manufacturer’s specs) The toggle switch shuts off the coil as it turns the probe on and vice versa. The coil and probe are never on at the same time. The FX-1 switch box is conveniently mounted on the detector pole in a neutral position (for both right and left-hand users) and to prevent the toggle from being accidentally switched or bumped by the user or damaged by tree limbs, brush, etc. if switch box is brushed or hit during detecting. No external buzzers, vibrators or lights are needed as all target responses are heard clearly through your detector headphones! No extra batteries are required as the FX-1 utilizes the detector’s power source.