The F44 is a fully weatherproof, easy to use manual ground balance detector. It has superfast retune speed with excellent target separation and easy to use Discrimination, Sensitivity, Notch and Pinpoint features. Fe-Tone adjustable iron audio allows you to set the volume of ferrous targets lower than the volume of non-ferrous targets for increased clarity on desirable targets. GROUND-GRAB Computerized Ground Balancing and Manual Ground Balance make it easy to tune the F44 to the soil you are hunting in. Easily identify buried targets with the 9-Segment Target Categories and a 0-99 numeric Target-ID enhanced with 4-Tone Audo-ID System. Custom made allow users to set their own tones. Rain or shine the F44 excels when most detectors can't!